Forgot to put in HSA Contributions

Hey guys, I put in my distributions  but not my contributions for HSA and filed a few days ago. Do I get less of a refund for not including my contributions? I didn't realize I needed to put them in if it wasn't for a cafeteria plan. If it will give me back a substantial amount more, can I amend it on turbo tax and refile it? I filed federal and state and both have been accepted. Please help...