Birth control

So, I was on the depo shot for about two years,then moved on to the nexplanon Implant for a year, hated it and had it removed, switched to the pill for a month and now I’m not on anything for birth control. Will I be able to get pregnant? Or will it take awhile for my body to go back to normal? Also, I gained close to 50lbs while on nexplanon, will I start to lose that weight now that I’m off of everything?