Welcome to HCM.
Thanks for posting your query.
As you had two condom protection during your coitus with a sex worker, you will be unlikely to have HIV
Your Western Blot after 2 months is negative and your ELISA
after 6 months also came negative only.
So you need not worry about HIV and further tests are not necessary.
and skin problems after 2 weeks following your sexual experience may not be due to HIV
Wish you good luck