Is it normal that i am super sensitive and snap?

I experience friendship problems with one particular friend, their mood is constantly changing as is their opinion of me; we argue on a regular basis and it has been the point where they quite frequently make me cry. I do cry and get upset quite alot, and I am also quite sensitive. The slightest thing can make me turn on the waterworks and I snap at people when in a terrible state. It's hard to cope with, but I do see someone about it, but it has gotten to the point where I don't know whether this is clinical. Thank you in advance :)