How long will discoloration last after Mesotherapy?

Two month ago I had mesotherapy in my inner thighs    I'm still have nogules but they are very slow became smaller.  What  worries me  its discoloration. Skin in the site if injections looks bluesh   like its brused.  Original bruses are gone.  But blue color stays.  If I press on the area it's blunches    Please advise if this can be fix.  I m very concern. Thank you