Hello,

two sides of my chest doesn't look to be similar in shape.One side looks to be slightly big in size.
May be improper excercise is the reason for this, I am not sure. Please let me know how can I get my chest in proper & uniform shape. 

Also please tell me which specialist doctor I can consult for this.

Thanks.

If u working out, doing anything that works out ur pecs i.E. Bench, chest press, bicep curls, etc. Make sure u use free weights, not machines and not barbells, only single handed dumbells... Because one side of ur body is clearly doing much more work and it is becoming unbalanced... So use individual wieghts as opposed to machine and 2 handed barred weights i.E. A benchpress bar