Hi welcome to Health care magic forum. It is strange that you had some thing on the same day. It might be an allergic reaction
to the blood and secretions. I advise you to consult a dermatologist
for diagnosis and treatment. you may have to undergo tests, V.D.R.L, R.B.S, besides other routine tests for confermation of the disease.
Besides i advise you some diet recommendations as, avoid taking pulses, potato , other tubers, and fish. take more of green leafy vegetables, sprouts, milk, egg, meat, fruits, juices, and dry fruits. Avoid having sex during periods in future. Wishing for a quick recovery.Thanks for calling.