Thanks for your response. The antibiotic families that she is allergic to are penicillin---ampicillin got her 26 years back after she had peritinitis; the other specific antibiotics are zithromax; macrobid and avelox...these are the ones she used that gave her urtica or hives and she had to get on prednisone etc. When she went to get bactrum as prescribed by a gynecologist, the pharmacist told her she was allergic to sulfa family drugs so not to take it. When she takes clindomycin or other antibiotics, even with taking some acidopholis, for tooth issues, she gets diarrhea after taking about the 3rd pill. This is not an allergy...we know...it is just a side effect of that drug. As we said the only antibiotic so far that seems to be okay for her to use is doxycycline...but she has been on that for 3 years and hopefully she won't also develop an allergy to that one too. A urologist told her that she should worry about being allergic to all these meds and you are saying not to worry. Who is correct?
After pregnancy, human physiology can change a bit. Also, you can become allergic to a drug even if you were not allergic to it before. But, she won't become allergic to all the antibiotics. This happens, don't worry.