back pain = bedroom problems?

Me and my husband both have back pain, so neither can be on top, we just tried to have sex and we both didn't get off and then he says get on top and finish me off. I'm down for a little pain but this is rediculous now we're both laying here unsatisfied and I don't know what to do. I tried to give him head and that was a no go. He didn't even try to finger me or offer to get me off. On top of that I'm pregnant and super emotional lately. Wtf do I do?