Hi ladies, Can anyone shed some light?

It seems that I eat something and I feel sick, nauseated, bloated and tired. Not sure where this is coming from as it literally has hit me in just the last 2 days? It might be breads, rice and milk? Is it possible to "get" Irritible Bowel Syndrome in pregnancy? Last night the only thing to relieve the pain in my abdomen was a heated up wheat bag. Should I go to the Doctor or does stuff like this happen in pregnancy? Never had it with DS and never had an issues with IBS symptoms before so it has taken me by surprise!?