Is Spotting With Stomach Pains After Intercourse Normal?

I recently had my period it was early than expected so sat it finished Monday my partner an I had sex then I went to toilet few hours later when I wiped there s blood it did not continue though. Tuesday morning had sex then went to toilet and again wipe there s blood it s like reddy pinky color so no continuation. Wednesday morning first morning toilet an when I wipe there s blood an has been when I use toilet. I do have slight pains in stomach lower deep pain but don t know what s going on. Please help if can.