<s>[INST] I often have irregular cycles. Usually about 37-39 days. Im not on BC and have unprotected sex but use the pull out method. My last period was January 3ed. A few days ago I thought I started my period. But when I checked, it was curvical mucus dripping down my leg. I had a miscarriage and DNC in 2008. Havnt been able to conceive since. Am I preg? . [/INST] Hi there, I have gone through your question, and I think I have understood your concern. I will suggest you the best possible treatment options. 1) in a woman with regular cycles day 10 to 20 of the cycle is the most fertile period of cycle.  Usually egg formation takes place between 13 and 16 day of the cycle. As you have mentioned that you have cycle of 38 to 39 days, either you are forming egg around day 25 of the cycle or there is some problem with egg formation. 2) I will suggest you to get basic USG done to know about structural normalcy of your uterus, tubes and ovaries. Also, conditions like PCs can be detected by USG. That also is a common cause of irregular cycles and difficulty in getting pregnant. I hope this answer helps you. . Thanks Chat Doctor.  </s>