pain in 5-unit cantilever bridge

In my early 20's I had lost my 2 lower molars on the left due to which upper molars exactly above the losts teeth had started coming down. Owing to that , I had 5-unit cantilever bridge placed on left side that fits 2 molars on 2 premolars and 1 canine. To get enough space to bite, doctor had to cut off the upper molars.FYI. I have one wisdom tooth behind the upper molar teeth.
I experience pain sometimes in the upper gums ( left side ) ( whether i chew or not ).
2) While chewing I feel sometimes 1st premolar pains, sometimes the whole bridge
Only  2 weeks are over and I feel scared to chew from left side.Please suggest and guide.