So I just did a HCG injection in my thigh (intra-muscularly because that's how I roll). First attempt I hit a big vein an I pulled the pin out because blood was going into the seringe. So I switched needles and injected 750iu's (leaving another 750 iu's in the seringe)**MY QUESTION IS**since there is now blood in the seringe does that affect the integrity of the HCG? (I'm refrigerating it and will inject in another 3 days). I know blood goes bad at some point even if it is refrigerated (its my blood I know, but would it be unwise to inject it when it has been out of my body for 3 days?) Let me know what you think.