Is it likely I'm pregnant?

Ok so on june 17th this year i got the depo provera shot. The physician told me to wait a week to have unprotected sex just to be safe. I ended up waiting only 2 days after that i had unprotected sex. i had unprotected sex many days following aswell. i usually get my period around today and i have not gotten it. I had the period signs such zits and sore boobs. But those signs can also be side effects of the shot and pregnancy. I've also been eating a lot lately (which is also a side effect of the shot and pregnancy) and i think i've been peeing more than usual. Is it likely that i'm pregnant? I'm only 16 years old and not looking to have a kid.