Need help

Savannah

I was on my period for only 3 days not long I’m usually 6 days and it was dark red and brown then after the 3 days it was brown for 2 days just when I wiped.. now I’m peeing a lot and having mild cramps right below my stomach and on my left side and my boobs are burning every now and then . I took a home test and it said negative! I made a dr appointment has anyone had this happen and was pregnant?