New allergies from pregnancy?

Has any one developed any allergies from being pregnant? Or had any that went away? With my son I hit the 2 month mark and I became allergic to band aids. I'm 9 weeks yesterday and my son cut me and it got infected so I had to use a band aid and all of a sudden I'm not getting a chemical burn from it haha. It's nice but weird. Usually ven up until now I get a scar an a red burn from the band aid glue. I went to my dr the first time it happened cuz I cut my arm open so badly it needed stitches an she was even shocked that I had a chemical burn from a band aid.