I got my permanent dental bridge of front two teeth day before yesterday, it looks nice and does not hurt but I feel its slightly loose. It doesn't move but within my gums i feel weird sensations of movement or as if there are bubbles there when i put my tongue there. What could this be? Also, my gums on the top of the bridge have become slightly dark- i got my 2 tewth extracted 2 months ago. It does not hurt at all but why is the colour not back to normal? Please help.