Replying to Giving double the blood.

I gave blood yesterday, and I gave double (the thing where they like recycle your blood ,put stuff back into you and whatnot, but they end up getting more blood). I felt fine afterwards, better than when i gave regular in fact, which they said is normal because you get fluid back while giving double. But they also said it might make me cold, which it did, but I still feel internally cold today and i cant warm up. Has anyone experienced this before? Is it something i should call the united blood services about? or will it hopefully just go away