Not sure what to do

I mailed my return in May, I couldn't e-file cause I didn't know my AGI. I still have not gotten any notice of my return being accepted or received a refund. I go on IRS website to check on my return and it cant find anything. I called and the machine says they cant find anything. So Im like wtf..I dont want to remail it and nothing happens again. I wanted to e-file but turbotax says not to, but if they haven't gotten anything anyways does it even matter?