Preterm labor injections P17

I am technically due April 4th, I have to have a c-section due to complications with my daughter; I am having a boy this time 💙! I started having crazy back pain Monday after my injection Tuesday it went away, starting to feel it again and it's Thursday. The doctors placed me on bed rest- starting to contract and a tiny finger tip dialated!! WTF my husband and I have been trying for 5 years to have another baby! 😢 I'm being told I need to make it at least another 6-7 weeks before the chance increases to a good survival rate! I am terrified! Anyone else have a 29-30 week baby? This is my last chance I won't go through this again and my husband is so terribly worried 😰