Skin allergy. Can this be treated.

I m having urticaria type skin allergy where there are reddish swelling pimple type rashes with itching and burning sensation on legs and hands which disappears after sometime.i have used montec lac for 5 days.the allergy is reducing while using medicne and coming back once i stop the medication.i have used antibiotics for about 2 months for fistula problem. i have used antibiotics like ceftum Ciprofloxacin metronidazole ceftidine monocef antibiotics in 7 th month of pregnancy.i have also used hand sanitation .now im not able to clean vessels because of these rashes.bathing with soap also making my hands dry and raised slin rashes are coming.can this be treated.im applying moisturizer but thats not helping me much.please give the appropriate suggestion