I am wondering if what I am feeling with the change in my body could be pregnancy or due to diet changes. I recently moved in with my significant other who eats a lot healthier than I, and I have been eating a whole lot better sense then. I also have pregnancy symptoms so I'm curious what you guys think. I bought a test although it was invalid and don't want to try another until I'm more sure that I'm not just psyching myself out.

I'm on Depo birth control and sometimes spot and cramp occasionally.
Symptoms: Constipation, bloating, cramping, spotting only for a few hours, extra hungry. I feel like I have been peeing extra but I think I've been drinking more. My back and boobs are also sore but I workout. I feel nausea sometimes but feel like I'm tricking myself into it.