Swollen gums after crown re-cemented 2 days ago.

Hi:It’s best to go back to your dentist to make sure there is no cement remaining and the bite is ok.Best,Dr. Maddahi

Hello!
It sounds like you might have some cement left under your gums, you should go back to your dentist's office for them to be able to see it and if needed clean it, in the mean time try to gently floss.
Hope this helps, good luck