i must agree i used to google every thing before i realised i had anxiety....it was the worst thing i could have done it made me alot worse!!! you see these thing you think you may have because you all of a sudden think yes... i have this and that ect.... but you haven't. it sounds like you are suffering with anxiety your symptoms are the same as mine iv had this for over 2 years its very hard to deal with but once you know what it is instead of thinking how it got there think how your going to get out of this stage of your life honestly dont worry nothing bad is going to happen to you i promise, you need to stay calm when you feel anxious and just breath close your eyes take 10 deep breaths, relax open your eyes and your be feeling fine again. also try drinking camolion tea this helps to relax. The symptoms will eventually go. just disappear and your forget all about them, also try taking a yoga class this is very helpful or getting a few books your mum will be happy to help when she realises you have accepted this is anxiety and want to help get rid of it, also dont worry stop using google its just going to make you worse. doctors know what there doing if they were concerned about anything you would know by now your going to be ok. honestly does these thing it will help you.