Advice please...

Now I'm noticing that every little thing he does or does not do bothers me more than something like this has ever bothered me before. I'm usually the cool mellow girlfriend type who doesn't let anything bother her. But now, I can't stop thinking about him and it's beginning to consume me. I have been arguing with him over the stupidest of things. Im scared I'm going to push him away. I know he just got out and he's excited to see his family and friends, but he is staying with an uncle that doesnt allow "Girls" over and I haven't been able to see him in person, just talk and text everyday. I'm super emotional, moody, depressed, nauseated, I can't sleep, I havent eaten in days, lost 5 lbs all in a 3 day period. 

Speaking of periods, I had just got off of mine 4 days before he got out and start taking birth control immediately after my period ended. Obviously we had sex like three times in the first  day and haven't had a chance to do it again. But now 7 days after my normal period ended, I started light spotting for the first 2 days and now four days later, it's medium spotting or what looks like a light period all over again. 

Is this normal? The moodyness? The spotting? How can I help myself to stop feeling the way that I do? Seriously what is wrong with me? I really am beginning to think something is wrong with me! Please tell me what you think guys? Tell me like it is....