hello... thanks for trusting the healthcare magic doctors for ur health related queries. I guess ur concern is about..what causes functional cyst in ovary with infertility..right. first I want to discuss about the functional cyst. they are may be follicular cyst or may be corpus luteam cyst etc. among these follicular cyst is most common functional cyst. it is formed, when follicle not ruptured during ovulation n trapped inside the ovary. in this way it is formed a cyst with passage of time. but it is not a big deal. it will resolves with time n most of the cases not required any treatment. but in few cases it can causes abdominal pain or irregular menses etc. so RELAX..KEEP PATIENCE. ur functional cyst can resolves with time. secondly u told that u have no problem in menses, then there is high chances of getting pregnant in ur case. with the above discussion u can try out my suggestions- 1. try to do coitus during fertile period(it is from 10th to 16th day of cycle) during which chances of getting pregnancy is high. 2.if you are came under reproductive age group( age from 15-45 years came under this group in this group chances of getting pregnancy is high). then u have DOUBLE CHANCES of getting pregnancy. 3. if u r in hurry then visit nearby infertility specialist. He/she can help u. I hope the above information is useful, informative and helpful for u. regards-Dr sudha rani panagar ( DON T WORRY...RELAX..RELAX..RELAX. I can understand ur tense-full situation, I pray the God that u will be blessed with a cute n healthy baby..hopefully TWINS)