My husband and I have been trying to conceive for over five years now, I did all the various blood works, HSG, and ultrsounds, my husband did sperm count and tested for STDs and all the tests came back negative, except the ultrasound which showed that I had a cyst on my left ovary. I was told that it was too small to be removed and it will go away naturally, nonetheless, conceiption for us didn't occur up to this day and the cyst has long gone according to the second ultrasound. Why am I not able to conceive?