Period due today but not bleeding

I had a little bit of bleeding when I wiped yesterday so I put a tampon in but when I took it out there was no blood on it only when i wiped, so I thought it was spotting. However I’m due on my period today but I’ve not come on. I’ve been having cramps and really sore boobs over the last week or so too. I also did a pregnancy test yesterday and it was negative. Do you think I could be pregnant?