Ughh I need some advice 😩😞

Sooo I’m apparently about to start my period tomorrow according to glow soo my last period was July 1st and I start light bleeding on the 28th of July not even enough to fill a pad just spotting and only when I wipe for like

As long as a period but it wasn’t like my usual flow 🤔 soooo it say I’m supposed to start my period which I still feel off and very weird like I’m pregnant but I got negatives test so I just gave up on testing but I have no symptoms of my period I just been having cravings and can’t sleep at night right 😩 should I go in for a blood test ? Something seem so off