You could get fitted for a diaphragm, although it isn't 'permanent' it can be inserted at a time that's not quite so disruptive.
Your other option I think would be a copper IUD - I don't think they have hormones? Not like the Mirena anyway.
FWIW, I have said it before but I can't recommend the vasectomy enough, lol. But obviously when you are sure you are ready.