serious question

Ok, my husband and I have been trying to conceive for about a year now. I am in my fertile days and we have been having sex. Well I hurt myself yesterday right after sex, (somehow pulled a muscle in my back) well now I can't have sex because I'll hurt my back more. But I'm ovulating now. Plus even if I wanted to try and have sex, he works night shift and we wouldn't be about to have sex until the morning. I was just wondering, are my chances of pregnancy still high, because we have been having sex?