Has anyone else experienced this?

Ayisha
So I was on the depo shot back in June. My period stopped for good the next day. I only did one round and I was due back for the second round in September. Never went back. Fast forward I got my first period  on January 1st. It was normal. I had sex a couple of times during my fertile dates (per glow) but he only released in me once throughout those dates (January 23 to be exact). I have been a little nauseous, some vomitting, dizziness, headaches, fullness in pelvic area, loss of appetite  (no sore boobs or frequent urination). All HPTs have been negative and so was my blood test on Monday. So my period was due yesterday 2/8, however, I started spotting then a few hours later it stopped. Then a few hours later I had some blood that looked like a period then it immediately stopped. Overnight and this morning nothing but a few spots when I wipe.