Smear normal

BAFFLED !!
All sorts going on down below, started last APRIL bleeding after sex and unusual smelly discharge, that cleared up with antibiotics. Then returned again. last JULY I had a huge bleed with large clots during my period, very abnormal for me. I was sent for scans, internal scans and smear all came back normal. Smelly discharge gone with more antibiotics. Since April the bleeding after sex never stopped. I have to go for a Coloscopy on Tuesday. Wondering if anyone had same symptoms ? Thank you x