Scared of having another preemie

My last baby had to fight so hard to be with us. (This is our third) and I'm already feeling AWFUL. I feel so sick and have BH or mild contractions haven't decided which yet because of my high pain tolerance but they happen all day long. My back KILLS me, I'm losing pieces of my plug and I'm nauseated. I am on progesterone suppositories, but last time my water spontaneously broke and I was not effaced and only 1cm. I am so so scared I'm going to have another preemie.. Any advice or anyone that has had a preemie and then a full term birth after would be awesome. Just need some encouragement bc I'm am scared and not sure if I can make it to my goal of 35 weeks as that is 6ish weeks away.. 😞😞😞