I've got a similar situation with my female Maya. She has been peeing in my bed,and Sunday morning peed on my legs in bed. This morning again she peed on the couch where I slept last night because the bed was wet with the enzymatic cleaner that I treated it with to get ride of the odour.Fortunatley I was not on the couch at the time. Like you I'm back at school,a major change in her routine and she is very possesive of me. Her littermate Bodhi had the nerve to sleep at my feet last night, hence the marking with peepee. She is at the vets overnight to be tested. There is a spray called Feliway and an anti-anxiety medication that the vet will give me if she has no health problems. I love her dearly and lavish attention on her but it doesn't seem to be enough. Good luck with your guy, I'm hopeful that this situation can be remedied with time ,patience and enzymatic cleaners.
Fresh lemon peel placed on the spots are also supposed to be deterrants.