Same here, get yourself seen by a doc and tell them you think it may be chicken pox. I had it at about 28, suddenly started feeling dreadful, high fever, next day I can out in pustules on my face to begin with. Went to the A&E as I felt so dreadful, walked in telling them I had never had chicken pox. They said I had a cold, go home take a paracetamol. Next day I was covered in pustules, still high fever, went back and they said I had acne and to see a derm

Eventually saw my gp, who said yes I had chicken pox. All they could do really was tell me to take paracetamol for the fever, not use soap and not to scratch (very important, I did an ended up covered in scars to counterbalance the p!)
I ended up being off work for about 3 weeks as you are contagious until all pustules have dried up, I felt reaaly rough for the 1st week due to the fever but after that I was fine. My daughter who was 6 months old at the time caught it from me and was fine, hardly bothered her at all.
Anyway, what I meant to say before I started waffling was good idea to get yourself checked out, it can be serious to have as an adult but not necessarily, I felt bloody awful for a week but fine after that.