ovary pain

Tegan • 18 • Taken • Australian • Pregnant with #1 ❣
Hey ladies so only recently I've been experiencing excruciating pain in one of my ovaries (I think) during sex. The pain is unbearable and I have to stop and it almost brings me to tears. It's only in one side. I had a Pap smear and sti test done last week and it all came out fine. What else could this be?