Weird period?

So I'm 4 days late today and this afternoon I was spotting happy to see it oddly enough cause I was so worried, I was on my feet for HOURS at work and when I got home the tampon I had on was completely dry. I've been having weird sickness feeling cramps the past few days and today pretty bad but yet I'm not bleeding besides the short spotting. I'm broke at the moment to get a test it'll have to wait till Friday but I'm gonna be honest I'm afraid.