How can I get my skin back to normal

Last Sunday I started taking macrobid for a uti (2x a day for 7 days). During that week I felt nauseous and on Wednesday night I noticed I had small bumps all around my forehead and a little on my neck. I finished taking them since I was almost Finished. On Friday night my face itched bad so I took some Benadryl to help clear my face and did not work right away but I kept taking it until Sunday and the small bumps had slowly disappeared. As soon as they disappeared this major breakout all over my forehead and chest started happening. I wash my face every morning and night but they just won’t go away. I can’t put a face mask or anything on because for some odd reason it irritates my skin. I have no idea what is causing it and I’m really about cry because it’s bad. Do anyone have any advice on how I can clear my skin????