Marie l had the same thing happen to me l went and checked to see if l had H Pylori and l did have it mate its cured now thank goodness but for 1 year l didnt know what was wrong with me nor did the doctors then l eventually found a good english doctor he knew what was wrong for 1 year l was so sick mate but now lm better l also had staph infection for 10 years l had sores inside my nose l told my doctor this and he straight away knew what it was other doctors told me it was nothing for 10 years PLEASE go and get a H Pylori test done if u are also suffering sever indigestion and horrible pains in the abdomen area even when u eat something the indigestion is bad if u have this happening to u then go get checked mate good luck mate.
Hi
Welcome to the MedHelp forum!
A rash related to periods can be due to hormonal imbalance, exacerbation of dermatitis, H pylori infection, or due to exacerbation of fungal infection. Since you get them every 17 days, the cycle is very short. This can be due to hormonal imbalance, PCOD, or due to some problem in the lining of the uterus. It can even be due to uterine infection of some type.
Since I cannot examine you and know other related conditions you may be having, nor is a detailed history possible on net, I have listed the various possibilities that should be looked into. Please consult your gynecologist. Take care!