In Need of Some ZZZs!!

I can't sleep. I went to bed alittle past midnight and woke up around 4am!! I've been sleeping over at my friend's house and only sleeping around 3-4 hours a night! I've been having short  term memory this whole week!! It's also been affecting me at my internship and I've been forgetting things like crazy!! I'm so worried. It's 6am and I'm going to the gym just so that maybe tonight I can sleep better. I haven't been drinking coffee for the past 2 days as well so that my sleep won't really be affected. Gosh, I hope it works. I have to intern tommorrow and I can't mess up anything like how I did last week!! I gotta stop sleeping late from on. At least on the weekdays.