I'm confused if I'm pregnant or not

so I took a pregnancy test and it said yes and after I had sex again with my partner I was sore and light pink blood but now I just went to the toilet and it was red. and I'm really confused much might I add my period is a week later 7 days and then I thought I might take a test so I did and it said yes so I'm like is something wrong and I pregnant . UGHH so confused