Am I perhaps being too harsh?

Let me start off by saying the person involved in the situation is an ex from Highschool. We dated for almost 3 years before I called it quits. I've tried to remain friends with him over the years and he'll be fine with it for sometime but after awhile he'll always bring up the topic of getting back together. I hate to say it but I'm no longer attracted to him/ in love with him what so ever and I'm even repulsed by the thought of ever being with him. Hes a great guy, but I no longer see him that way. I constantly try pushing him to start dating again & have even sat him down to tell him I'll only ever be friends with him and nothing more, if he cant just remain friends then he can stop talking to me and I wont blame him for it. Hes one of my best friends & I'd hate to loose him since I've had him in my life since I was 15 (I'm now 23) but I understand it might not be so easy for some people to get over their exs so I wouldnt blame him for leaving. We've both dated others & I'm currently pregnant from a result of a failed relationship. I moved on but apparently he hasn't been able to. Anyways, that's just background for the small issue I have with him.

He likes to show up to my house unannounced & only calls me to come outside once he arrives or knocks at my door and asks my mom/ siblings if I'm home so I can go outside. Sometimes he'll text before coming but that's very rare. Or he'll call me to get ready out of the blue and expects me to drop everything and go with him where ever he wants to go for the day. Since I'm pregnant & because of covid I rarely want to go out anywhere, much less get ready. Sometimes I'm sleeping and he'll show up and expects me to get out of bed to see him. The times I do agree to go out with him he'll try to keep me out as long as he can even though I'll complain about how achy my body is and how sleepy I get. When I wasnt pregnant I wouldnt mind it but now that im so close to giving birth I cant stay out too long without getting excessively tired. Idk, it just irritates me so much that he wont understand he cant just show up unannounced or that I want to rest instead of seeing him or going out. I feel like he shows up unannounced just to check up on me like he would when we used to date (he thought I was cheating even though I never did). Hed also drive by my house to see if I was home or not. Or perhaps he thinks he'll catch me with my babydaddy ? Idk. I just dont like it. Idk how to make him understand to stop doing all that extra shit. He gets all sensitive when I tell him not to do that but I think he should at least call to ask if I'm home or awake before just showing up?

Sorry long rant.