Sudden pain during sex, inside on the right side.

Lizz
So me and my hubby have sex usually 2-5 times a week. Suddenly Friday, it hurt. I didn't pinpoint the pain then but tonight we did it again and I pinpointed the pain to my inner vaginal wall in the right side. Sex has never hurt for me before, other than the male being so long he hits my cervix and it's definitely not that kind of pain. I'm more concerned it's a tumor or cyst or something. Has anyone else ever experienced this? He's very worried and I swore that if it happened the next time I would see an OBGYN but wondering if the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> community had any info to offer. Thanks in advance!!