What the heck is going on with me

My last period was June 13th through June 17th. My period is now 10 days late and I’ve been having back pain, occasionally nausea, tiredness and overall feeling unwell. 5 days ago I had light streaks of blood mixed in with discharge, was very thin. I get “hot flashes” at night for a few days now, and then it goes away shortly. Usually when it happens my temperature is higher than usual, like 99.2-99.5 each time. I feel like I’m barely sleeping honestly even though I know I am but I toss and turn around a lot at night and have to go pee sometimes really badly when I do use the bathroom, it’s only a little....Should I take a test or is it too soon for anything to show up? My periods are regular as far as I know, I haven’t had any issues with them coming on time in a longgggg time. I definitely had sex a lot during my “fertile window”.