(no) sex after pregnancy

I'm 7 months pp, my husband and I have only attempted at sex once since I gave birth. It started as we're both exhausted from having a newborn to just not having enough time in the day. After a long day and the baby is finally in bed, neither of us have the energy to initiate sex. So this past weekend, we went away. Thought it would be the perfect time to have sex. But it was a fail. I was so sensitive and everything kind of hurt. (I had an easy labour and quick recovery, so I don't see why I would be so sensitive down there.) We've never had to use lub before because I'm usually wet enough, so of course we didn't prepare any. Well, I was too dry so we had to give up after 30 minutes. It was awful. My husband thought I wasn't attracted to him anymore. I told it wasn't the case but I really don't know why either! Is it because I'm getting older (I'm 30), or because I'm still breastfeeding? I'm kind of scared to try again... Any advice?