I Was Diagnosed With Shingles This Past Thursday. Doctor Said

I was diagnosed with shingles this past Thursday. Doctor said I caught it within 72 hours so I am on Valtrex 3 times a day for 7 days. The shingles are on my right upper thigh around to my buttocks. I have been putting Calamine lotion on it since I left the doctor. We have a wedding to go to on Saturday where I have a niece that is 26 weeks pregnant, an 84 year old father who supposedly has never had chicken pox and a 26 month old great niece who has not been vaccinated!! What are the chances of my still being contagious and giving any of them chicken pox? My spots are drying up and have never really broken open - the lotion seems to be drying them up and they look like blisters that have nothing inside and have shrunk down!!