Two weeks ago I had some toxin and now my right eyelid has a droop. The last toxin I had was over three years ago previous to this.

Sounds like your practitioner has over-treated/ hit the wrong muscle – if you have toxin injected in the muscle that lifts the eyelid, it weakens the muscle, so the eyelid will droop. The muscle will recover its function in a couple of months. Maybe next time, choose a practitioner with more experience with toxin?