My advice to you is to stay gluten-free and to chart your cycles. If your cycles are normal, there is no need to worry. If they are off, you aren't ovulating, they are too long, etc., you will have the information handy to show your doctor. Also, charting can help you get pregnant faster, since you can pinpoint ovulation.
I forgot to mention this as well. I used the Billings Method to conceive and avoid pregnancy depending on timeframe. Using it, I discovered that my period was coming too close to ovulation, so I may not have had enough stuff (technical term) lining my uterine wall to support pregnancy. (I was still nursing my second child, which caused my periods to not be as regular.) But I learned that after I was pregnant with my third. A doctor's appointment showed that my progesterone levels were low, so I used supplements temporarily. Had I not been charting, the doctor would never had known to check my level.
Taking Charge of Your Fertility is a good reference book.