Hi I'm 19 And I Think I'm 98.99% That I

Hi I'm 19 and I think I'm 98.99% that I am pregnant because I have had a missed period on the 28th of last month but had this weird light bleeding that didn't seem like a period for like 5-6 days long but now my left breast has been hurting lately and some of the type of food like cheese makes me sick but I'm to scared to go take a test what should I do ?