Answer:if I was you I would try and calm down take a few deep breaths and go for a short walk or something to try and keep your mind off of what's bothering you. Sometimes you just have to take a break because whatever is making your mental health bad could get worse if you dont try to talk to someone about it or try and clear your mind if it's your thoughts...
Explanation:
True, all of these could be symptoms of stress
Ask this in the physics area next time please, but turn to someone you trust or if your young an adult, like your parents or your teachers. Maybe even your friends. No matter what age tell someone and if they don't know then get medical help if they can't.
Probably breast cancer scanning, or a Mammogram.
Explanation:
~~I just know~~