Health worries

This might sound excessive/exaggerated but....

Recently ive been pretty stressed with my alevel exams coming up and I cannot stop checking over my body all the time to make sure that im okay...

Im absolutely terrified that I have a bad illness or something that will kill me like a brain tumour.

Im too scared to go to the doctors because I feel like they would just not take me seriously...

Anyone else ever felt like this? Would be good if I could get some support from all you lovely ladies out there! :)