Definitely call the nurse line and ask what they want you to do. They will probably have you bring him in just to be safe. If he is allergic to amoxicillin, he would be itchy, swollen, and have the rash. (I am allergic to all -cillins so I know from first hand how uncomfortable it is)
Honestly? He may have a mild case of Chicken Pox. My daughter got them, TWICE, after being vaccinated! The shot actually gave them to her, then she got them from my nephew. My nephew and neice also got them after vaccination, Brian twice and Lucile once. I actually decided to find someone that has chicken pox so I don't have to vaccinate my next child, (but that's a little off subject)the vaccination can actually cause you to get shingles as an adult. Getting chicken pox stops this from happening...
Good Luck!
H.
ps. I would like to send a big thank you to your husband for fighting in Iraq. I hope he comes home quickly and safely.
"A true soldier doesn't fight because he hates what is in front of him, he fights because he loves what is behind him."