i have this exact same problem. everything a week before my period sets me off. i mean today, i started crying in the middle of an ict lesson for absolutally no reason.
i will give you this advice though. if you want to stay with your boyfriend, then i suggest you keep away from him during this week, because it causes some pretty nasty consiquences when boys don't understand why you are being all crazy. this month, like most months, my boyfriend has had enough of my tears and tantrums and is now thinking our relationship through. trust me, either try to explain it to him without getting mad at him, or just stay away from him. i too have had this problem only since i started college, or, as you said, this term. i hate putting him through it every month, but i do it without fail and it is wrecking our relationship. i know it's all my fault too and this stupid pms. he thinks i use the same excuse every month to try and get out of why we fight, but it's the only logical reason. this time though, after having 4 months of it, i think my tom has definately been scared off for life. so do something about it before it's too late, like i left it too late.
i also have the same problems with the sleep. i am constantly tired the week before hand, and i get very very irritable at everyone. again, i'm now trying to take deep breaths when i feel myself getting angry and i walk away from the problem.
if you find it is getting too much though, and you can't control it, then go and see your gp.. he will (or might?) prescribe you the pill and that is suppose to help with pms.