Colds??

Has anyone else suffered with getting sick in their third trimester? In the last month I've gotten 3 horrible colds! Ive been fine all through my pregnancy, even dodged the flu in my 2nd trimester when all my coworkers got it. But 2 weeks ago I came down with an awful cold and ended up in the ER because I was dehydrated even though I drink soo much water. I just came down with another full blown cold today (thought it was allergies but allergy meds arent working and I definitely feel sick sick). I'm 38 weeks tomorrow and I'm afraid I'll be sick when I go into labor. 🙄 i feel like the baby is just sucking all the life from me at this point and making me sick!