Missed Depo... Pregnant or Withdrawal??

Clarissa🦋 • Mother of two handsome boys 13 & 4 and a beautiful girl 2... Baby #4 Due 2021😍

So my last shot was in September, I was due for my next shot in December but missed that appointment. I also been having periods in November n December and had spotting for one day in January 24th. Now I’m experiencing headaches, nausea/queasiness, dizziness, every little smell bothers me, fatigue, mood swings like crying when I see some one else cry on tv type cry, been a totally emotional roller coaster. The app says I’m 19 day without period and test was negative... did I test to early??