Girls, can anyone tell me if they've experienced something similar? Al...

Girls, can anyone tell me if they've experienced something similar? Almost three weeks ago, there was a lump in my right buttock area (I thought it might be a lymph node inflamed). I told my midwife/gynecologist that it causes discomfort after sleeping or lying on my side for long periods (I worry about not harming the baby at 30 weeks). The midwife looked at it but didn't dwell on it, after she said get an ultrasound, blood test for inflammation showed nothing, she said it's not a lymph node, go see a general practitioner and let her take a look. The general practitioner thinks it could be a psoas hernia, I checked all forums, I can't find anyone with