Im usually ok but sometimes I get these panic thoughts in my head that I'm going to fail my subjects at uni and not get them done in time when theres weeks to do them. I don't know what to do to to control them they freak me out.

sounds fairly normal, but unpleasant unwanted thoughts are usually from obsessive compulsive disorder, OCD which is an anxiety disorder.
I have this problem :eek:

It actually sounds more like Generalized Anxiety Disorder (GAD) to me because you're having worries about realistic, real-life problems. I have both OCD and GAD, so if you want more clarification, feel free to ask! God bless! :angel:
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