Questions for mom who have had 3+ c-sections.

So i am pregnant with my last baby #5. My first baby 13 yrs ago (2004) was all natural, but he got stuck in the birth canal after his head came out and ended up being shoulder displasia. I had to have surgery after he was born. Fast forward 3 years later (2007) i was pregnant with my daughter and developed Preclampsia in my 3rd trimester. By 36 weeks it got bad so with that ans history of what happened with my first baby i had a c-section. In 2011 i had my 3rd baby and they schduled my c section for 39w but by 38 i started getting high blood pressure and protein in my urine so obvious signs of preclampsia again so i had him then. My last baby (2014) hes 2.5 i had another c section and he was schduled and born at 39w. Bow im pregnant with my last baby obviously im having a c section but what im wondering by moms who have had 3+ c sections did they schdule you for 39w like normal or did they schedule you for sooner. Ive been told that its a high risk to wait to 39w to do the section and should be done at 37w. Has anyone had any experience with this? My dr honestly hasnt mentioned anything about my c section since my 1st appointment other than to discuss my tubal being done.