What Is The Treatment For Skin Rashes In The Arm?

Hi, I have had a very bad rash on my arm. I have had it for well over 7 months now. Long story short, I went to see a homeopathic doctor about two weeks ago. She gave me a remedy to try, but it just got worse. This past weekend I nearly went crazy – my entire body was itchig, the rash has spread to both my arms and my elbows, both my knees and my bum. So a friend gave me allergex. I took allergex Friday afternoon, Saturday morning, lunch and evening and Sunday morning and lunch time. The rash disappeared. But now, I am late with my periods. They were supposed to come yesterday. I am never late. Could it be because of the allergex? I am using the pill and I am using other protection as well, so it is very unlikely that I am pregnant…