Pains ....

I'm 36 weeks + 3 and I'm suffering with unbearable hip pain. I've always had bad hips before I was pregnant but it's got a million times worse especially lately. My hips seize up. I can't stand properly unless I'm slightly bent over as my hips feel too weak, it hurts to lay on the left as that's where most of the pain is and if I lay on my right I get acid reflux. Is there any way to help? It's getting to the point where I'm finding it hard to do simple tasks like walking upstairs :(