Taking Celebrex For The First Time. Had A Hip Replacement

taking celebrex for the first time. Had a hip replacement 1 week ago. Takink celebrex since.. Home from hospital and last few days been itching with swollen lips and itching in different spots especiallt lower back. very small tiny prickly, scabbed area on back from itching. took one 25 mg Benadryl. should I continue ??