Tons of pain and discomfort

I had an accident not too long ago and now I'm 5 weeks pregnant. But I have a ton of back pain kind of chest pain neck pain headaches and I just can't help the pain since the only thing I can take is Tylenol. It's my first time so I'm wondering if pregnancy pillow will help this early on or what are some things I can buy that will help? I can't see obgyn because it's too soon and my doc says it's from car accident I have to ride it out till I can see obgyn to ask them. Any suggestions?