somebody pleaseee help me 😭

Artisa
Tried to have sex with my SO & it hurt my lower abdomen which is NOT NORMAL. He even asked what was going on with me. I tried riding & the doggy style positions and all it did was make it worse. Did any ladies experience right before they got a (+) Pregnancy test ? 
Other important info. OD was the 21st. Had unprotected sex 20th. Could this also affect anything?