I'm 36 wks and I've had three bouts of diarrhoea (TMI I know) in the last 2.5 wks. On all occasions it was half a day after eating something in a restaurant so I think my body must by hyper-sensitive to bugs in food. (Which makes you wonder about restaurants!) I NEVER get it usually.
I got them just days after becoming pg - one of the signs for me. I have IBS and found when PG, especially the last 2 months, that I could hardly leave the house as it was so bad. maybe you need to top up the probiotic yoghurt?
I know hormones play a part but I just don't undertand why the last three episodes happened after eating out - and all on fairly hot days. I dread to think what's happening backstage in restaurant kitchens! Dh, who thinks that salmonella and listeria and ecoli etc are all illnesses dreamt up by the evil manufacturers of Dettol surface cleaner, tells me it's a coincidence.