Preterm labor ?

Hey ladies I am on baby #3 and was wondering how many of you mommas had a preterm baby and then had another one with the next pregnancy my daughter was at 42 weeks &1 day with an induction born 6 pounds 8 oz because she was too comfy & my son was at 35 weeks naturally with 5 pounds & 18 0z I was asked about the makena shot but denied it because I read up on it not being as effective was wondering are you really at a high risk or more of a risk to have another baby early or earlier then the last ? I’d like to hear some stories 💙💙