Could I be pregnant?

My last period was on the 2 and I had sex with my husband when I was ovulating. This past weekend my husbands grandma passed away and as I was in the funeral crying my contact fell off. On top of that i have never been to a funeral before so I was so nervous. My head started hurting so bad and i began to feel dizzy and had the sensation of throwing up. The next day we went to the cemetery and I was standing up for about 3 hours had not eaten and I fainted for a couple of seconds. Everyone told me that I was pregnant. All this week I’ve been feeling shaky and yesterday and today I’ve been feeling cramps and back pains. My period is supposed to be in 5 days so I think it’s soon to be feeling cramps and back pains. But yesterday 6 days before my period I took a pregnancy test and got a negative. I feel different though and i have like no taste buds I don’t even feel hungry for the past 5 days. Is it just my period coming or could it be that I’m pregnant? Should I test again or wait?