Pre-Term Labor Questions

Hannah • Hey my name is Hannah. I am a 27 yo SAHM 💙👶🏻 💙4/29/16 💙👶🏻 💙4/23/18
Hi! I'm an FTM and a high risk pregnancy due to a vanishing twin and several subcorionic hematomas (which I've been hospitalized several times for) my high risk doc said there was a high chance I would go into Pre-term labor as early as 25 weeks if I don't miscarry first. 
Have any of you mommies given birth early? 
How early? 
What was the reason (if I may ask) How did you cope? 
 I would like to thank everyone in advance for responding my SO and I are really nervous and everyone's experience helps.