Is it possible to develop an allergy or intolerance to something during pregnancy, that has not affected you before?

I have been ill a couple of times recently, with some symptoms very 'bug' like, yet no-one else around me has been ill. The first time I wondered if it was something dodgy I'd eaten, now having been ill again just 5 weeks later at the weekend (but only me) I'm thinking it could be a reaction to something. Although it's like a bug, it's somehow different-although I can't really explain it. But this last time I was in serious pain and frightened; and I'm not one to fuss about this stuff. I can't think of any other reason for it, so could my body be re-acting/ rejecting something? It's not just a dodgy 'pregnancy' sickness, it's really nasty and draining, actually ILL!!

My wife had this and this is the advice we received;

Even if you had already been taking regular medications to treat allergies (whether prescription or over the counter or homeopathic), check with your doctor about their safety during pregnancy, and don’t continue to use them until you get the go-ahead. In fact, your doctor should be the final word on any medication you might want to use. Some over-the-counter antihistamines are generally considered safe in pregnancy, while others are not. Pharmacists probably won’t sell you any antihistamine for use during pregnancy. If you get a prescription for a suitable antihistamine remember that they have some side effects, including making you sleepy (and if you’re already tired from plain old pregnancy fatigue, do you really want to take something that will add to that exhaustion?).

Hope that helps!

Neal 8-)