Feeling Alone

I'm feeling a bit down today. I'm in college and haven't much sleep this week due to studying and tests. My SO has aspergers. I was wondering if anyone else struggles with this as well. He has a hard time with focusing and empathy in particular. The empathy part is why I'm feeling down. Sometimes he just doesn't understand why I'm sad or upset and doesn't seem to care why. For example, I've been worried about a lot of things lately and I've been having trouble sleeping, so I'll do something else instead of sleep. I tell him I'm tired all the time and he just tells me I should have slept instead of doing whatever I was doing. It's like he doesn't understand that I couldn't sleep. But he has it in his head that I shouldn't be complaining of being tired because I should have slept when I had the chance. I'm just feeling like I can't talk to anyone. He's currently sleeping without a care in the world while I lay awake worrying about everything. I know he can't really help how he thinks but sometimes I just wish he could make me feel like he understands and wants to help me make it better instead of making me feel like I'm annoying him by complaining.