Excessive crying at 18

im 18yrs old but i cry like a new born. i cry about little things, i cry about situations that occur in my life but i never discuss them w/anyone, i even cry about crying. my mother fusses and argues w/me when i tell her that i cant help it & instead of trying to help me, she makes matters worse. when she fusses at me about crying, it makes me cry even more. i feel like this is not something that i will grow out of, i dont want to be in my 20s crying like a child & i dont want this to ruin any future friendships. i've done research & the symptoms for being emotionally sensative fit me pretty well. i just wish there was a medication that could stop me from crying. is there? if so, i would gladly take it b/c im up for anything that will stop this. i always feel like im in this alone & that makes me cry as well. what should i do?