Not sure how to feel, is he abusive?

I’m currently 18 weeks pregnant with my boyfriend who’ve I’ve been with for about a year we also both have children from previous relationships. I’m really not sure how to feel anymore he seems just so on/off emotionally like some days he’ll constantly tell me he loves me and he wants to make me happy etc then some days he will ignore nearly every text I send. We don’t live together right now but it’s only a 30 minute drive between us, sometimes I’ll see him multiple times a week and sometimes it’ll be a week or so between he works fairly long hours but then sometimes he’ll have a lot of time off and if I ask to see him he’ll be awkward and make excuses which worries me how it will be when baby comes. We’re both into having rough sex/bdsm (me submissive) but I feel like he uses this as an excuse to hurt me if he’s angry like the other day we argued and he drove over to talk and arrived drunk 😕 he was still angry at me and we had sex twice he kept hitting me which is something I normally enjoy but he slapped me so hard that I couldn’t hear out of my ear for over a day and he kept saying stuff about how I’ve made him angry and he wants to hurt me then we had anal sex which he went in dry and it hurt which the more hurt my moaning sounds the more it turns him on basically the whole time we were having sex he was hurting me now I don’t mind this I do find it enjoyable but I’m scared that it’s not just kink for him maybe and I don’t know how far he would take it when he’s drunk it’s just how hot and cold he always is too, I wouldn’t be surprised if he was seeing someone else also especially as he doesn’t really make our relationship public. Is this normal and I’m over reacting?