I've been on depo for 5 years and I just recently got off 9-26-16 my question is can I get pregnant?

I've been off the shot since 9-26-16 can I get pregnant now? I've had two periods but one was for 4 days the first couple days was like a normal period but then it just started to be spotting. My second one was for 3 days and it was spotting not very heavy. Do u think I can get pregnant? And every month I have cramps and very moody boobs sore and chocolate settles it down but NO blood. I'm wondering if I will be able to get pregnant now or it will take longer. It's not that I want to get pregnant it's just that I need to know if I need to get on the pill or not. I'm confused on what to do.