V tender over g'bladdr. u/s of abdo normal. pain under lower ribs. is it possible pain is muscular in origin, given the most sensitive area g'bddr?

Possible: There are other tests to look at your gallbladder so if your symptoms point in this direction you should pursue these. All the best.

Still gallbladder: it still could be your gallbladder in spite of negative ultrasound. negative ultrasound mean only no stone, it does not mean normal gallbladder. watch what you eat. eggs and greasy food and spicy food. hydrate well. take anti acid ,or medication from over the counter like nexuim or prevacid (lansoprazole). take ibuprofen for pain, and apply heat pad.