Late afee and penalty in gst

You are filed GSTR 1 for the month of Jan-20 on 13th Feb-20... Right...?

The said ITC claim through GSTR 3B return only. Not for GSTR 1 return...

1.additional itc claimed in dec 19 for (Nov 19) Rs.5000. and reversed the amount in Jan 2020 only 5000 "not with interest" .
now I want to know is there any interest payable for the Rs.5000 as I've not received any notice for the same.

2. I filed Jan 2020 gstr 1 on Feb 13 2020 (today) is there any late fee payable for late filing along with gstr 3b on 20th Feb .

there is no liability showing in my liability ledger for the above both
I hope this is clear pls clear my doubts
thank u