Posted: 29/01/2016 at 21:22
Rather disagree with a) as blister on a pressure spot and will just get larger and more painful with every step. Would actually pop it in at least 2 places - taking all sterile precautions, press gently to expel fluid, allow to dry, then apply Compeed.
Really hardcore would be to get large needle with quite thick thread, soak in surgical spirit, then thread through blister, press to expel fluid then cut off excess thread to allow a bit to protrude either end to allow for continuous drainage, then apply Compeed. However realise this might not be practicable at this stage.
Go for the 10K anyway and all the best!!