I need help avoiding Crits, Stickies and everything else

Basically I would like tips on avoiding crits and rockets and stickies, and help with my reaction times for ubering people (when and when not to uber).

Well, there isn't really an obvious way of avoiding crits. The only thing I can think of is bright glowing explosive= DEATH, stay as far as possible from soldiers and demomen who are at or near the top of the scoreboard. As for the uber, if you are using the Kritz, wait until there are at least 3 enemies in your healing targets line of sight. For the Ubercannon (or Medigun, whatever you prefer) if you are about to enter an area swarming with enemies, pop it. If you have low health and you are behind enemy lines, get as close as you can to your side as possible and then pop the uber to make it safely to your nearest resupply room. \

Note: I am not a super medic but these tend to keep my death ratio lower. Oh and have a lot of common sense.

For the first, the only thing you can do is make sure you're not in a spammable spot. As for playing medic, I can definitely tell you that with kritz, sooner is better than later. With the reg uber, if you're heal bud's health is going down, and you can see more people ready to kill kim, go ahead and use it, you don't have to wait til he's at a sliver of health.

MisterStrum hits a very valuable point-

The Invulnerability Über (and remember, you're not invincible - trains and gravity can still kill you) - can wait until the last second when you believe either your patient and or yourself are about to take terminal damage.  From that point and 10 seconds on, you will not take damage, and your patient will heal while they do damage.

As for the Krit Über, this is not true, since you and your patient are not invincible.  As soon as you die, the Über is cut short, so you still need to be active in dodging and avoiding damage from enemies.  Be VERY careful if you are fighting a Pyro, since they can reflect the Krit, and since your patient is at full buff, they may be able to withstand a reflected krit, but you will not.

Simple: Be me.

I have never been killed by a crit, but plenty of normal explosives. Just never a rocket... Hmm. Or pipe.

I'm pretty much anti-explosive.

You've never been killed by a crit??  Are you sure you know how to identify a crit??

They glow really shiny and blue.

I only play defense on Gravelpit and Dustbowl. Only maps I go on, but I'm always blue on Goldrush for some reason. I've been a defender ONCE, and we ALL piled in to this small room with windows and proceeded to rape.

I got Intern and Specialist thanks to that clusterfuck.

EDIT: Perhaps I should clarify: I have never been killed by a crit EXPLOSIVE. I get killed by backstabs and headshots all the time.

It's really all I die by. ><

Well there's your problem.  You're on BLU team.  You see, RED's crits glow RED.  I'm sure you've been killed by those DOZENS of times.  And if not, then welcome to TF2, you must be new here.

thanks guys
if you have any more random advice for the medic feel free to post it here 

Try to get involved with a clan, or find some friends that you can play with.  You will die a lot less when you are playing with people you can trust, and that will protect you.  I can't tell you how many times I've died poking my head around a corner because I saw my patient turn the corner and they didn't tell me that there were still active threats around the corner..  Or how many times a scout got past my patient, and they didn't so much as turn around to help me neutralize them..  Playing with people enough to be able to anticipate how they will react to situations will help you enormously also.