Preterm baby mommies out there!

Currently 24 weeks freaking out. I've been having contractions since last night, albeit very irregular. But this morning I woke up to pretty painful Contractions every five minutes. Called the doc and he told me to drink something, lay down, and see if it relieves them and if within the hour they slow down and become less painful he'll see me at my apt on Monday, and if they continue and I have more than six within the hour to go to the ER and he will meet me there. Just need some reassurance and positive stories if you had a similar situation or if you gave birth early on. Thanks in advance!