Problem of overbite. Will it be normal?

Doctor, I had a feeling from some days that my side profile is not looking normal so I researched about it and came to know that I have problem of overbite...and then I visited a dentist and he confirmed it and treatment started...He basically said that it will be corrected by using a bite plate and I got that bite plate and it has an arch wire which covers the front few teeth...now the lower teeth touch on the plate and the wire creates very little pressure on upper teeth... So I want to know that is it the right way to treat or braces should be used? Also I am using it for past 20 days and one change I noticed in my face is that my right cheekbone has come out a little and feels swollen coz  only one tooth of lower right side is making contact on plate and no other teeth is in contact and coz of this there is continuous pressure on right side of cheek and now face looks asymmetrical a bit from right side..Please tell if it is possible in just 20 days will it be normal???