I'll be starting stims on thursday, however, unlike my first IVF, I am taking Gonal F on its own the first day, as opposed to mixing it with Menopur. The question is, can I reuse the needle it comes with?! Do I have to disinfect it or something? Last time I would mix it with the menopur so It was totally different and Im not sure if you can re-use needles or not... Thank you very much in advance!!