Conflicted about baby #2

My husband and I are officially trying for baby number two. Only problem is, I can't stand when he touches me anymore. A lot of this has to do with being sexually assaulted in the past. Some of it is also the fact we've been having a rough go recently and sex with him just does nothing for me. I feel so horrible about this, because when our first daughter was born we agreed we wanted a second child around this time. And while I'd LOVE another baby, I'm concerned where my head is in all this. I need help.