I have to be really careful with my gut, I have IBS but I've managed to control it quite well for a good while. However when I went back on the pill back in the summer it really flared up, I came off the pill and went on HRT (long story!) since being on the pill and HRT I must admit that it's got worse, the reflux has been terrible. I've been considering stopping the HRT because of it. Apparently the Estrogen can cause the valve between your stomach and oesophagus to relax and that's when the acid rises and aggravates your throat, causing a lump sensation. If you do try HRT try and avoid tablets. I'm using the patch and Utrogestan vaginally. Unfortunately I think the pill at the start really messed things up, so I'm not sure what's caused what!