Possible faulty transmission

What is your question?

Yesterday while driving, felt the engine straining to reach 30 miles per hour. While at a stop, tried to move away but when pressed gas pedal, car did not move, engine still ran but car did not respond to gas pedal. Made revving noises but did not move. Car also makes loud noise when put into drive. I noticed a pink fluid leaking from under the car a couple of weeks ago, but leaking stopped so never did anything about it. Car also used to shudder when driving more then 60 miles per hour, is there a connection to all of these problems?