14 weeks and pain on my pubic bone?

I'm just about 14 weeks pregnant, and I've been having a lot of pressure on my pubic bone. Mainly on the leftish side. It's causing some cramping pain. I also have a lot of air in my body. If I'm not farting, I'm burping. Am I ok? What's wrong? Why is this happening? I went to the doctor a few days ago and heard the heartbeat but the pain really just starting this morning.