Im going to be starting my hcg today and plan to run it till the end of my cycle which has 4 weeks left. From reading the hcg stickies im going to be going with 500 iu's eod, here's my problem...my hcg is a 5000 iu kit with 2ml of water, how would i work out 500 iu's on a insulin syringe if the 2 were mixed together. Is it ok to store the hcg in the fridge?