Q&A: Will a hypothyroid condition mess up my cycle?
In November I became pregnant. I had a miscarriage at 10 weeks, and in January, had a D&C (dilation and curettage). In November my endocrinologist had increased my Levoxyl prescription from 0.75 mg. to 0.100 mg.
I was diagnosed with a hypothyroid three to four years ago. Before the D&C, my cycles were approximately 30 days long. Since the D&C, they have been running 27, 30, 25, and 15 days long. I have also been using a urine ovulation prediction kit for the past four months. The first month, the test showed a surge in my FH levels on day 18. The last three months have not shown a surge, nor has there been a change in my cervical fluid. I have begun the tests on day eight and stopped on day 21.
Could this problem with my cycles be caused by the D&C, or is it more likely to be my thyroid? I'm not sure at this point if I should first go to my gynecologist or endocrinologist. Any direction you could give me would be a helpful since I am really not sure where to turn.
It could be the thyroid. Any change in the dose of thyroid medication should be followed up after three to four weeks with another blood test. Thyroid function can change with pregnancy so you need to make sure that you are in the correct range.
The D&C would not have caused you to become anovulatory but we do see patients whose cycles seem to change after a pregnancy or miscarriage. Sometimes we find an explanation and sometimes we don’t. If your thyroid function is normal, you should see your fertility doctor to be evaluated for other causes for anovulation.