What do you think?

Sam • Sc| sam_wherry13
I took a pregnancy test and it came out negative but I still haven't hit my period? Do you think I should buy another one, or wait? My period is only like 3-4 days late but it's not normal for it to be like this unless I'm switching my routine, I asked some friends and they said I shouldn't  worry, and that I shouldn't be. The thing is that I did have unprotected sexual twice within the last month and I'm not sure. Any suggestions?