Help confused

Alexis

So two week ago I notice that every time I’d wipe there would be a little bit of blood in my discharge and I had some mild cramps my period is only 3 days late and last week I’ve been feeling more exhausted then usual and my boobs are sore I also have been feeling nauseous a bit dizzy and shakey sometimes I took a pregnancy test on Saturday but it looks negative to me any suggestions or thought is it all just in my head?