Having pain on left buttock

Thats call sciatica. Usually happened when you are at third trimester. You need to speak with gynae. Some would do Pre Natal massage to ease the pain. It will go away once you give birth. I had it during my #2 pregnancy

i had it too! pain was more intense when i stood up or about to sit down. pain went off itself but came back again 2 wks later & now is gone again