Indigestion!

Laura • Age 34. Mum to a 2 year old. Pregnant again, having had a recent miscarriage.
Anybody else experiencing seriously bad indigestion at night? It doesn't seem to affect me in the day. I didn't expect to have such strong symptoms at this point (bloating, wind) at only 4 weeks, 3 days! I hope it's just a phase, can't work out why this is happening.