Your problem could be due to two main reasons.
Firstly this coul myalgiaya.....also know as muscle pain
which happens along with a viral infection (which you recently had).
If this is case then you need not worry much as it will resolve on its own soon. An anti inflammatory and analgesic
like nucoxia will help.
Secondly this might be due to fibromyalgia
In this case I would advise you to take fibromil and pregablin which work wonders.
Kindly stop wearing tight brasserie until the symptoms resolve.
I hope my advice has helped