Lost feeling?!

Hi! I’m wondering if anybody has experienced “lost feeling” during sex. Usually I can feel when my boyfriend is inside me but recently I haven’t really felt much until we go hard core. It almost feels like nothing is inside... I got my period and we had sex during it and generally I can feel it while on my period and this time I didn’t feel much. I also had a sharp ovary pain before my period and was super gassy, and started and I am on the pill. Has anybody else experienced anything like this before?!