Girls, I already asked this question, but maybe someone with the same …

Girls, I already asked this question, but maybe someone with the same problem appeared. After intercourse there's burning for 15-20 minutes and nothing from this burning helps. This problem has been since the beginning of pregnancy and hasn't gone away yet. It seems like strong arousal and wetness down there, but I still don't understand what it is and what it comes from. Has anyone had this? What did they use to fix it? Tried lubricant, also painful. Maybe there are other creams?