Possible pregnancy?

So, I was due on feb 28. I’d been having mild intermittent cramps for a few days and sore breasts. I had some very very light spotting but my period STILL hasn’t arrived. I took a pregnancy test the day after I was due and it’s negative. Usually I am 28-29 days so it’s really unusual that I am late. Is it worth texting again in a few days do you think?