I'm prescribed doxycycline 100mg 1-0-1 for five days. I'm alergi...

I'm prescribed doxycycline 100mg 1-0-1 for five days. I'm alergic to tetracycline group of medicines. After taking Doxy... for two days I noticed a rash on right hand armpit, rash on my penis tip which give me irritation/itching. This rash on penis tip further developed into continuous ozzing pus on penis head. I'm not comfortable with this itching and I've to play with my penis to make it more comfortable feeling. On third day I found my undergarment having large spots of pus. I had loose motions coupled with severe stomach pain. I also noticed boils on my right foot anckle.