Hi My Name Is Jasmine. And I Have Been On

Hi my name is Jasmine. And I have been on the depo shot for the first time for two months now. I've been spotting for two weeks going on three. Been having cramps and throwing up yellow stuff. I had unprotected sex after a week I got my depo shot and my bf injected in me. Can I be pregnant? Very concerned because I felt this way with my first child.