Mtgman.....I was like you. When I went for my first infusion, I was so nervous. I heard all these horror stories about breathing problems, and people having reactions. When I got to the center, I had to wait for a chair..which didn't bother me because I was so nervous.
Eventually I got a seat and the nursing staff was real nice. They hooked my IV up, I laid back, and then.....nothing. I sat there for about 2 hours and then the IV was done. I remember thinking "This is what I was scared of?"
As far as how long it will take to feel results, everyone is different. I felt the results the same day. I got back all my energy. It felt like a shot of B-12. Also, my trips to the bathroom went down drastically. But not everyone is like this. Some have pain afterwords. Some get tired. I can't say how you will feel, but don't worry about anything.
My only suggestions is to bring a good book with you and your iPod. Where I go, a lot of people bring their laptops and some watch movies. I would say bring something to keep your mind busy and off the IV.
Also, don't worry so much about the pre-meds. I know a lot of people on here tell you to take Tylenol and Benidryl. I have never taken these before an infusion. Where I go, they give you only 15minutes worth first to test you. If you feel something, then they will give you something for it. I don't know where you are or how they do it by you, but I like this way better. No need to take unneccessary meds if I don't need them.
Good luck and let us know how it went.
36 yr old Male with Crohn's Disease since '88 - No Surgery yet
Been on almost every type of drug with bad results
Remicade since Nov 2009
Prilosec 20.6mg - 2x a day
Multivitamin daily, Loperamide HCL - 2mg every other day