I'm glad to join the group. I am 35 and this is my 1st baby. I am currently 16 weeks. I got a bladder infection and was perscribed Macrobid. I had a bad reaction to it where my chest was really tight and I had trouble breathing, along with a burning sensation under my skin. My Dr. put me on benedryl for 24 hours and changed my med for the infection to Keflex. I'm doing better now, but I'm worried that the allergic reaction may have harmed my baby. My dr assured me that I was fine, but I wanted to know if any of you other mommies have had this happen and can give me some peace of mind and advice. Thanks for you support!