C-section?

Natalie • 22, Married & mother to my beautiful Ayva Raylynn.. Pregnant with baby #2 :) baby dust to all of you beautiful ladies!
Hi ladies I was wondering if any of you have already had a section with previous pregnancy? I was trying to go all natural (personal reference) but I had complications and I ended up with a csection.. Anywho I was wondering if after a csection is it safe to have a natural birth with a second pregnancy? I had talked to a midwife when I went for a check up to see if I can start trying again.. Long story short I asked her and she said they don't recommended it and I should just have another csection.. I heard you can only have 3 pregnancies with it.. I want more than 3 kids in the future so I'm scared.. I'm only 21.. I want both my first 2 to be close in age and my next two somewhere down the line.. But I'm so worried and I can't figure out what to do... 
I had a csection because my heart rate was through the roof and my LO's was extremely low and they had said she had the cord wrapped around her neck which wasn't true in the end. I feel like they're in for it for the extra money (I know that's a bad way to think but idk what to think really.. (Sorry for ranting) I want to start working out to strengthen my pelvic floor because when I was in labor my legs were closed and they said it wasn't normal so I thought to myself maybe I'm not strong enough and my body was going in shock? Idk lol I'm just all in all scared.. Any advice ladies? What would you do in my situation. 
I'm 2dpo so I'm still waiting but never to early to askk