Tina coliced

I think every horse owners worst fear came true today. I took a nap and woke about 4. I peaked out the bathroom window and noticed that Tina was laying down. Bill said that she had been doing that for about 15 mins but since her head wasnt down and she wasnt thrashing, he didnt seem too worried.
I got a cup of coffee and went back to the bathroom and noticed that he head was extended flat..i ran out of the house, to her, and got her up. A few minutes later she was down again...I forced her up again, and got her to walking. Came back in to call the vet and she went down again, this time legs straight out acting like she was almost trying to roll. She started to sweat and her breathing was starting to get really labored.
The vet was going to be about 40 mins and so we walked her, she wanted to lay down so bad, but we kept it up. By the time the vet got there her sweats had stopped and her breathing was back to normal.
She's okay now, but we've each taken horsie watch duty tonight. I'm afraid to go to sleep and have the baby monitor on full volume so i can hear everything.
If timing is everything, i think we got to her just in time.
Just kinda scared and nervous.
The foal appears to be well, he/she kicked the vet, lol