Increased pain after having Botox in my masseter muscle for TMJ.

this is my 2nd botox injection for tmj, the 1st injection worked a treat within a day and lasted for about 7 weeks, i have just had my 2nd injection with the same very experienced maxillo facial consultant, in the same area 2 injections of 5oml, it is now 48 hours since having this and the pain in my muscle and face is really servere this only started after having the procedure and i am scared something has gone dreadfully wrong