Am i just being irritable or is he insensitive?

I'm in my final year of uni and the workload is very tough. I have been suffering from insomnia, procrastination and anxiety with up coming deadlines. my partner works nights and comes home in the morning with the horn. After trying to get to sleep for ages i get very annoyed at being woken up before my alarm, right now is the furthest thing from my mind too. Anyway, he turns over in a huff and falls asleep straight away, snoring like an elephant....needless to say, i cant get back to sleep and am in a mood with him all day.