I got 2 1099-r that were not received in 2018. The second distribution was never requested or received by me. do I omit these from 2018 filing?

[CherylW]

You can't omit them, as the IRS also got a copy from your plan administrator.

If you never received them, you'll still have to report them on your return.  Contact the administrator and tell them to correct the problem.  You probably will have to amend your 2018 return, depending on what the administrator does.