Suggest Treatment For Bloating And Heartburn

I have had problems with my stomach since 2006 when I was 36 yrs of age ( mother of then 3 children). I was overweight and went on a strict diet and lost 5 stone and then I started getting severe bloating when I ate something and then would burp continuously and have trouble breathing. In the meantime I got pregnant and lost the baby at 20 wks and then, as I was not recovering well I had blood tests and found out I was b12 deficient. I m now on 3 monthly injections. After about 18 months the bloating went, had a brief spell of feeling normal and then I started with gnawing at the top of my stomach slightly to the right. This went after taking zantac and I got pregnant again in 2008. The pregnancy was fine, really bad heartburn the whole time and a brief spell of gnawing but it went quickly. After I had the baby, the heartburn continued and then when she was 6 months old(this is last year) the gnawing came back and has been constant ever since (for 8 months). I can have the odd weekend when it subsides, but never longer than that. Sometimes it goes through to my right shoulder blade and my husband has to massage it. I am on Lansaprole 30mg per day, but the doctor won t treat me for h.pylori. I have had no tests but he said he will send me for an endoscopy at my next visit. Is this an ulcer? And if so why wouldn t it have healed in 8 months? I am worried it s something sinister, although I have not lost any weight or have any other symptoms than what I have told you. Please offer some advice, I am going out of my mind with worry and the stress of it all! Oh I am also breastfeeding and my periods have not returned yet (2 years without periods due to pregnancy and 14 months breastfeeding) Could this be hormone related? Thanks!