Cold + Dehydrated = Ouch!

Today I went to RCC to do a blood draw to measure my FSH level.  I found out today this means "follicle stimulating hormone" level.  In other words, it helps the doctor get a starting point for what my stimulating meds need to be.  Now I don't mind needles (good thing, too, because this process is FULL of them!!) and normally I don't really mind having my blood drawn.  But normally I also have a really good vein in my right arm that is really easy to access.  But today when I pulled up my sleeve -- I couldn't see any veins!  And even when they put the elastic thing on my arm, still not much to work with.  And then the nurse asked me if a) I had been drinking enough water, and b) if I was cold.  Apparently both being dehydrated and being cold make your veins constrict and difficult to find.  So she did the best she could, but she ended up having to dig a little...ouch!  Hopefully if I can remember to drink lots of water between now and Friday (and blast the heater in the car on the way to RCC) Friday's blood draw will be easier.