i'm 20wks now (3rd dc) and it has started with a vengence, not just in the evening but a lot during the day and it really aches! it will be like this until the baby comes out now in my experience. also it doesn't matter what i eat or drink...its having something in my stomch that does it!
It is both - I got it almost straight away, but my friend only has it now at 35 weeks. The hormones cause the muscle between your stomach and oesophagus to relax, letting acid out, the baby pushing on your stomach later on compounds the problem.
I got it very early on but to be honest I did have stomach problems before. It's the hormones doing their stuff. Saying that now I've started to get baby pushing (29 weeks) so it's getting a lot worse!! xxx