My partner makes me feel shut out, idk what to do? Or how to explain it.?

He gets mad about things and wants to be alone. I get being alone helps him clam down. And, I know it's a better alternative than other things. But, It really makes me feel shut out. He doesn't get that him wanting to be alone makes me feel shut out either. He says I'm weird for feeling that way, and idk how to explain it too him. He also only gets this way about either me having some problem that affects him, or if we are having a fight. Any other problem and he wants to do something fun together or cuddle. But like, I was supposed to do errand yesterday morning, and drop him off at class. It saves him some time, instead of driving to the bus stop. But, I was stick with a fever. He didn't say anything, but he just kinda stops talking and does his thing. I'm bothered that he didn't seem to care I had a fever. When he came back later in the afternoon, he didn't ask how I was or say anything, even though I was still in bed and felt like crap. And him not talking to me just made me feel worse. I just don't know how to deal with this, or how to talk to him to try to get it thru to him. He is good about things once he gets what I'm trying to say, but sometimes thats hard. Help!