Good Day Will Be 21 By 22 Of This Month

Good day will be 21 by 22 of this month am scared and confuse I may be pregnant and I dont want to be I had unprotected sex 10th of last month my period came the next day being 11th and I had sex again 28th since 3days now I have been having soreness on my boobs and yesterday thou it not yet 11th for my period I did a urine pregnancy test and the result is 1 full line and a very very faint line am confuse am I pregnant?