Help ! Anyone experienced this b4 ?

Anadel

So recently these last couple days I had sex with my boyfriend who was away for a week & i don’t know if it’s bc I shaved that day & had sex& it was burning while sex was going on & this morning again it happened but not so much during but afterwards it was burning a little & when I peed it burned a little what could it be I have never had this happen before please help 😞