Your gassiness might increase if you start taking fiber supplements. I'd suggest waiting for a week or two to see if this resolves on its own, and then think about fiber supplements or increasing the fiber in your diet. Probiotic formulas can occasionally cause increased gassiness in people, but that usually subsides within a few days.
This could be so many things, so definitely be as patient as you can. Don't zero in on a diagnosis just yet! If you're having right upper quadrant (RUQ) pain, an abdominal ultrasound or even an upper endoscopy might be wise. Your physician can palpate your abdomen, but they really need to actually see the organs for a more thorough picture.
Dbab was right on that your symptoms could be indicative of GERD, and I've heard that this occasionally presents after pregnancy in some women. The upper endoscopy is the test of choice for that beast.