Anaphalytic shock and pregnancy, HELP.?

Im pregnant and allergic to EVERYTHING, especially around spring when things begin to turn green, I have gone into anaphalytic shock twice, and wound up in the hospital. I am worried that if I get allergic to something there is nothing I can do because of the baby. I have an Epi-pen, but that in itself is a risk without being pregnant. I know that the drugs they put me on in the hospital to slow my heart rate and open my throat would not be good for a baby. So what am I supposed to do?