burning after sex

so I've been struggling with bv and yeast infections but I'm not sure if the yeast infection went away completely. I took fluconazol a week ago I no longer have itching or discharge, but if I put my finger in my vagina there is white stuff on it it's not creamy or slimy it's kinda chunky. any way my boyfriend and I had sex and when he first put it in it burned but as we kept going it was fine now after it burns really bad. It wasn't dry and we were not tested for std a month ago we are both clear. has anyone ever experienced this