This is Dr David
I am sorry you are bleeding again.
I hope your infection hasn't come back.
you had a contraception injection.
without a gyn examination, it can be very difficult to know if you have that infection come back or if it is breakthrough bleeding from your contraception injection.
you should call up your GP doctor and let them know you are bleeding.
they may want to do another gyn exam and blood test to check for infections at this point.
since when you did have that coil infection, that caused bleeding as well.
are you willing to call up your GP doctor about this?