I-521L after overstaying?

im german married for us citizen. we live in ohio for almost 2 years now. i came here on a waiver visa and applied for my K3 visa.we talked to the congressman, when my wv was about to expire. he advised my to overstay my wv and file for I485 adjustment of status. i was pregnant that time too.
oh and my status on my I 485 says
This case has been sent to another office for processing because it has jurisdiction over the case. what does that mean?
which we did.......
i wasnt home for almost 2 years and applied for the travel document which got approved. could i get in any trouble using it? how would they even know that i overstayed after i filled for adjustment of status? uscis advised me to call boarder control and they told me im fine as long as i have my I 512L paper one me. i called 2 different locations to make sure. what should i do?
thanks in advance