From what you have mentioned it seems you are having an episode of pancreatitis due to gall bladder stones. H pylori being positive suggests acid peptic disease.
Next Steps
Consult a specialist to deal with the situation at the earliest. You might need to undergo a simple procedure of laparoscopic cholecystectomy to get you rid of pancreatitis. Appearance of symptoms in post partum period is quite common
Health Tips
Pancreatitis is a disease not be taken lightly.