Bruising from Tox

I did Tox 1 week ago today. I've never had it done before and I did it myself. My corrugator muscles have been sore to the touch ever since. I had a good front headache for the first 3-4 days and that's not even fully gone. I do think those muscles are very strong as I have a lot of deep frown lines and 11s. I probably have a lot of tight fascia in that area I need to work out. My question is if the soreness is normal? The Tox hasn't even fully kicked in in that area either and I did 4 units per an injection, 28 total.