I have a feeling it's because I'm in the middle of exams, so I have a lot of time where I'm at my desk bored studying etc, that I've gotten very obsessive with thinking about my girlfriend.
I have restrained from becoming needy physically, I only text her once every second day and see her once a week because were both quite busy with study...but it sucks - I check my phone every hour to see if she's texted me and I feel like a total loser.

It's also not healthy.
a) Do you think it's because at the moment I hate life due to exams and she is something which comforts me that I'm so dependant, therefore once holidays start I should feel back to normal and non-obsessive?
b) Does this happen to you when you don't see a girl you like for ages? Maybe it's just because I'm seeing her 30% of the amount Im used to
c) Or have I just become naturally needy and will be like this regardless of exams etc?

Basically I'm asking two things. Firstly, is this normal given circumstances (exams and boredom etc) and (from your experience) should it go away once life returns to normal. And secondly, how can I stop these sorts of thoughts?

I have hobbies and a good social circle, but I can't utilize those right now because I'm meant to be studying. What else would you suggest?

Thanks guys, lemme know if I'm the only pussy or if you have experienced similar thoughts also. That will give me some comfort
Cheers