Tips/help please!!!

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I got pregnant at 6 weeks pp after having twins little did I know I would get pregnant with twins again. I’m 27 weeks pregnant now and have 33 week old twins. I am incredibly terrified to have this many kids that are so young and on top of all that I’m not even 21 yet. My doctor doesn’t even expect the twins to make it past 34 weeks so we don’t have a ton of time left. My husband and I are clueless so I came to ask for help. Anyone have any experiences of having kids this close together or tips in general anything helps.