What i am calling an infection on my foot from a dextrose injection looks like maybe it could be spreading. it started with a red bump on my foot and now looks like i'm am bruised going in towards my ankle, but it is more red than bruised. it's been 3 w

Tell the doc: Contact the original doctor that gave you the injection and inform them about the reaction that you are having. If you do not get an answer, seek a second opinion. It is difficult to render an opinion online without examining the condition in person.

If it is more red: You may have a cellulitis or infection. Prior to this you mentioned you were dispensed antibiotics. You need to get a hold of your doc and tell them what is going on. That is the foot doc that gave you the dextrose injection.