According to your age there is a small possibility that you have measles you are vaccinated against it but people usually overcome it during the childhood). Measles begins with symptoms that include a high temperature, fatigue, headache, sneezing, cough, eye redness and itching, nose discharge, face swelling, and swollen lymph nodes. During measles, there are specific Koplik spots on the oral mucosa. On the 7th day, measles mainfests a rash that starts from the neck and goes down to the chest, arms, and legs. The rash is accompanied with a high temperature and fever. Smallpox (variola vera et minor) is an eradicated, viral infective disease - there is no chance that you are experiencing smallpox. According to your description, I don’t think that you have measles but you can follow up with a physical examination at a doctor's office.