Can I Conceive Safely With Stage 2 Endometriosis?

Hi, in 2005 I was diagnosed with stage 2 endometriosis, and a septum in my uterus (heart shaped uterus). I was able to concieve and delivered two healthy boys by c-section, one in 2007 and another in 2009. My OB that did the deliveries said that I can have as many children as I want. However, the GYN that I see said that after two cesereans it is no longer safe to get pregnant again, due to risk of uterine rupture. What is your opinion?