Serious sexual question! Please read💚

Lydia
 My husband and I was having sex yesterday( I know. TMI, but waits get better 😂) and after a while of me being on top we started having sex," doggie style".  And  a minute or two into this position I got a weird feeling in my stomach, to a second break&. Started again  and after sex I got I the biggest pain in my lower abdomen, and it was PAINFUL. I was frozen in pain for 20mins before my husband carried me to the bathtub .  And I soaked in hot water& took pain reliever.( the pain reliever didn't help).  After an hour-ish  in tub he helped me back in bed and I laid there for another hour or so before I could even sit up. &I I got called in to work early shortly after that,(8p-6a and the pain was finally decently gone at 4am) Long story short does anyone know what could of caused this pain? this wasn't my first time having these pains,but it's always when we do it / mess around from behind.