What Causes Vaginal Bleeding After Having Sexual Intercourse?

I have been with my boyfriend for over 2 years now, last year i was bleeding all the time constantly for 2 months, we found out it was chlamydia, we got treated and got tested again and it was clear for both of us, i had an ultrasound scan before finding out it was chlamydia and found out i had a cyst on both of my ovaries, but even getting treated for the chlamydia i still bleed everytime after sex, could the cysts still be there? are the causing it?