Im sick and dying T^T

Ive had this stupid cold sine May 29th,today is June 13th! Been 3 weeks that Ive had it & its starting to really annoy me! At least I wont get whatever stomach bug my brothers got to make them throw up for a day. because 1. I had it & 2. If im already sick with a cold or whatever,I wont catch what someone else has. Anyone know of anyways to get rid of a cold?