Relationship advice

I'll make this short.

Two months ago I moved in with my bf and we're having a bby I'm due in April. I feel really good with him and he also seems happy with me although we have to adjust to me being preggo. Sometimes I'm too tired to do something or there's things that I can't do but that's not a problem he's very understanding.

But lately he keeps asking if I'm sure I love him and want to be with him. At first it didn't bother me but now I'm starting to think he's the one that probably is having second thoughts. So I talked to him about it and he said that I'm not very affectionate, which is true but that doesn't mean I dnt love him. There's other ways I show him my love for him. He told me especially when he works double shifts at work I barely txt him but I know he's working and busy.

So yesterday my sis n husband were over until 1am I'm so exhausted right now at work :( but when they left he was a Lil tipsy and asked me again if I loved him and if I had something to say and then it really got to me all I wanted to do was sleep. So this morning of course I was upset n he asked what was wrong and I flat out said it if your having second thoughts then I'd rather be on my own! N he said why does it bother you if I ask and I said because maybe he's insecure. Please tell me what do you guys think or is it me am I overreacting?????