Pregnancy Test Positive, Bleeding. Depo Shot Taken Previously, Cervical Cancer Removed. Can I Get Pregnant?

Well I don't know how to write my question or anything but I have a lot of them um.. I took a depo shot in April of 2012 and I didn't do it again after that month the shot last 3 months to prevent pregnancy and now I've been trying to get pregnent so August 2012 I got pregnent and had miscarriage and I think it's from the shot so then September 2012 I went to my obgyn and did my papsmer and found cervical cancer then November 29th 2012 I got that's removed and she said wait 2 months to try and make a baby again so on April 2013 I did a home pregnancy test and it had a faint pink line saying yes I was pregnant and was 40 days late on my period and them a couple days later I started my period so I guess my question is what is wrong with me can I have kids? My period is always been messed up and sometimes coming but sometimes doesn't for months is it cause the cervial cancer or the depo shot or anything?

Thank you if you can answer this or even read it
Samantha Byrd