pain during sex

Hi ladies. I've been with my fiancé for 8 years. There is no issue of cheating. We had sex a few days ago and it seriously hurt. It felt like his penis was rubbing in the front of my opening (not best description). Every time I go to the toilet and wipe it is very sore. We just tried having sex again and the pain was worse and we had to stop. I've been using cream for thrush but it's not helping. I've never had this before. My fiancé said it feels sticky instead of wet. Not sure if that helps. Please any help would be great. I have been under a lot of stress lately but am going to make an appointment with doctor.