This is something that I have been thinking about. Ds1 was stillborn so I was induced at 32 weeks. Had ds2 just 9 months later, consultant decided on section at 36 weeks (with hindsight but at the time a welcome relief) Ds2 was fine and quite huge for gestation. However, I had massive pph and 4 units of blood, spent 3/4 hrs in theatre and 24hrs in HDU.
Different consultant for dd (now 6mo)- due to several of old consultant's dubious decisions. New one planned elective for 38+6, which I was a bit sulky about at the time (By then was horrid, shouty woman) but again know it was right decision. Another pph- not as serious, and only(!) 2 units blood.
At post-natal check up asked consultant if I should knock the having babies thing on the head- said no, another would be fine, now they know about my predisposition to bleed everywhere they can combat it earlier. Will ask next time if can have VBAC, but think already know the answer, and any risk to baby, however small, would be too great for me.
So I suppose it depends on the state of your womb and scar. Sadly, scanning the scar, as someone mentioned earlier, would not be normal procedure- it is unfortunate that you only get more monitoring once something has happened to you or a baby. If I could go back I would have ds2 and dd naturally, but I made my decision based on what I needed at the time.
JoseyJo- so sorry to hear about your son