I agree with everything Det says. I had my VBA2C because its what I wanted, I was passionate about never having another c-section.

FWIW, there are things you can do in your position. Check out spinning babies website to turn your baby into a more optimal position instead of being a posterior bub. Do some perineal massage in preparation for birth because that can help natural tearing. Birth in water and birthing position helps with tearing as well. You may not tear - not everyone does. I had two small tears (up and down) and I never felt them during or after birth (except whilst doing a wee - that stings a bit). I didn't need stitches.

If you have an epidural during a VBAC (which mostly aren't recommended) you will be on constant monitoring and on a bed - which increases your risk of rupture AND the risk of a repeat c-section. You could try a hypnobirthing course or a calmbirth course to help with any fears relating to the pain of labour, or to help you cope during the contractions.

Its totally your decision - but there are things that can be done to get rid of some of your fears.

All the best!