between DS1 and DS2 there's 18 months in age and my scare tore internally due to pressure...it was black and bruised for 12 months

YET

I had a tubual reversal, fell pg a month later,had DD 11 month later and went on to have DS3 16 motnhs after that and my scar is all good.

If your worried just get one of those belts to take the pressure off

ETA - sorry all 4 of my kids were c/s births incase anyone wondered