I have a phobia of vomit?

i know everyone is scared of something, but i have a proper phobia, and its really disrupting my life. i don't know when it started of what triggered the phobia but i have a terrible phobia of vomit. if i see it on the street i completely freak out. i start crying and shaking, and once ive seen vomit, i never forget. i can remember every experience ive had with vomit. i once saw a boy projectile vomit in my old school, and i started crying and shaking and hyperventilating. once a girl way sick in the sports hall,a dn i was so shaken i had to miss the lesson. its horrible. because vomiting is much a natural thing, i am constantly scared. every corner i turn i fear there will be vomit on the floor, if i see some spilt yogurt or paint i completely freak out before i realize its not puke. my friends are really supportive, but i feel terrible because is one of them is ill, i stand clear when i really want to be comforting them. i check every food date on packets in case i eat some off date food and get ill, and its just getting out of hand! what can i do? see a doctor? will i grow out of it? please help me. thanks