Depo shot

ⒶⓁⓁⒾⓈⓄⓃ ★★★ • Never tell me the odds
I'm getting my first depo shot. What are some of the symptoms you guys have had? I'm just really nervous and I want to know things I can expect. 
Edit: also I have been on the pill form of regular estrogen bc. So I know some symptoms of BC just not the ones from depo.