What Do Itchy Rashes On The Face After Taking Azo Indicate?

I bought an over the counter painkiller for BLADDER INFECTION called AZO I took 4 pills out of the 6 pills recommended daily . 2 at noon and 2 at 6pm . I noticed the wrinkles on my face started to burn like a rash. they were the only part of my body that turned red . this was around 8pm. then 30 minutes later I began to itch just about everywhere and my whole body became rash red. my arms and legs have small rash welts (word?) no hives. my eyes are puffy like the morning after of a long night drinking. I didn t take the last two. I m drinking water and cranberry juice. which isn t helping the stomach . no labored breathing or even a wheeze but very congested and ears are plugged. I have only had an allergic reaction to brethine (long ago medicine for asthma I think) I was a child otherwise nothing. it won t get worse will it? can I sleep in peace without resting in peace? ironic I ask that since I have narcolepsy!