my son only wants eggs, banana and yogurt most of the time all organic sometimes chicken beans and rice but that's pretty much it, he doesn't drink juice or eat junk food pizza occasionally

Yeah my son is a year and he is 22lbs but he's a picky eater and would rather milk than solid foods. So I think your baby boy is on the right track with his weight.

34lbs and almost 2 doesn't sound bad! Like @chasinghappiness said he's probably bloated. Maybe email his doc and she what he/she says.

He could be bloated from gas