I m a 23 yr old female. I went to dr yesterday 11-7-15 and he told me I had tonsillitis and prescribed amoxicillin. I took one dose last night before bed and woke up this morning with itchy burning rash with few blisters on my hands. It fades a little then becomes inflammed. I also noticed dark red blotches toward back roof of my mouth. What could this be? I have 2 children. One is 3 months old other is 5 yrs old. I don t want it to spread to them if it s something contagious.