I got my hcg in yesterday. 2 vials ( 5000iu) each. One powder and one liquid. This may sound really stupid but at wk 4 and 8 im suppose to mix these together and take twice each wk in 2500 iu doses. Ok, these little bottles look to b sealed glass bottles. How do i get the needle in them to mix the two so they remain sterile? Also, will it b ok to let the remaing 2500iu sit a few days mixed up until the 2nd injection is needed. Any help appreciated. Thanks