QUESTION: I recently found out that I have type 1 diabetes. I previously had an ectopic pregnancy that damaged my left fallopian tube, so I have only my right tube available. Can I conceive naturally, what are my chances, and how long might it take?
Yes, many women with type 1 diabetes can conceive and have healthy pregnancies. Natural pregnancy is also possible with one healthy fallopian tube, but no one can estimate your individual chance or time to conception without knowing your age, menstrual pattern, ovarian function, the condition of the remaining tube, and your partner’s fertility. Because you have known tubal damage and a previous ectopic pregnancy, arrange preconception care and an early fertility assessment rather than waiting many months.
Answer by Dr. Albana Greca, MD, MMedSc
No. Type 1 diabetes does not automatically cause infertility. However, poorly controlled glucose, thyroid disease, kidney complications, significant weight changes, or irregular menstrual cycles may make conception or pregnancy more difficult.
The most important step is to plan the pregnancy before stopping contraception. High glucose during the earliest weeks—often before pregnancy is recognized—raises the risk of miscarriage and birth defects. Current guidance recommends achieving glucose as close to normal as safely possible, ideally an HbA1c below 6.5%, before conception without causing excessive hypoglycemia.
Yes, provided the remaining tube is open and healthy, at least one ovary is functioning, and ovulation occurs. The ovaries do not follow a strict pattern in which the right and left sides alternate every month. Having one tube may reduce the opportunity for conception, but it does not make natural pregnancy impossible.
Your chance also depends strongly on age, egg supply, menstrual regularity, semen quality, pelvic scarring, endometriosis, and whether the right tube has been affected by the same condition that caused the ectopic pregnancy.
Because you have a known history of tubal damage, an obstetrician-gynecologist or fertility specialist may recommend checking whether the right tube is open. Tests may include hysterosalpingography, often called HSG, or a contrast ultrasound test. A fertility evaluation may also review ovulation, the uterus, and a semen analysis for your partner.
It is reasonable to request this evaluation now rather than automatically waiting 12 months, because previous ectopic pregnancy and known tubal disease can affect fertility.
Not necessarily. If the right tube is healthy, natural conception may occur. Intrauterine insemination, or IUI, places sperm inside the uterus but still requires a functioning fallopian tube for the egg and sperm to meet. It does not bypass a blocked tube.
In vitro fertilization, or IVF, fertilizes eggs outside the body and transfers an embryo into the uterus, so it largely bypasses the fallopian tubes. IVF may be considered if the remaining tube is blocked or severely damaged, fertility testing identifies another problem, or pregnancy does not occur after an appropriate period of trying.
Ask for coordinated preconception care with an endocrinology clinician and an obstetrician experienced in high-risk pregnancy or maternal-fetal medicine. The review should include:
Do not stop insulin while trying to conceive or during pregnancy. Type 1 diabetes always requires insulin. Our type 1 diabetes guide and insulin treatment guide explain the essential safety principles.
Contact your obstetric team immediately. A previous ectopic pregnancy increases the chance of another ectopic pregnancy, so early blood tests and an ultrasound are usually arranged to confirm that the pregnancy is developing inside the uterus.
Type 1 diabetes also requires frequent insulin adjustment during pregnancy. Continuous glucose monitoring is recommended, and pregnancy glucose targets are stricter than ordinary diabetes targets.
After a positive pregnancy test, seek urgent assessment for one-sided pelvic or abdominal pain, vaginal bleeding, shoulder-tip pain, dizziness, weakness, or fainting because these can be signs of another ectopic pregnancy. Seek emergency care for severe pain, heavy bleeding, collapse, vomiting with high glucose, difficult breathing, or moderate or high ketones.
You may be able to conceive naturally, but the condition of the right tube and your current diabetes control need assessment first. Do not rely on the idea that ovaries alternate monthly, and do not assume IUI will solve tubal damage. Arrange preconception diabetes care and a fertility consultation now so both issues can be evaluated together.
Educational safety note: This answer is for general diabetes and fertility education only. It does not replace personal endocrinology, obstetric, or fertility care. Do not stop contraception, insulin, or other medicines until your clinicians confirm that your diabetes and treatment plan are ready for pregnancy.
Last reviewed: July 2026.
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