How soon after a c section is it safe to get pregnant again?

I would suggest waiting AT LEAST 9 months. 12-18 or more would be better. But safe is kind of a relative term. Many VBAC friendly providers will refuse to do them without 18 months between deliveries, to give you a better idea.

my dr told me 2 years to make sure everything healed correctly

I've always heard 2 years.

I have heard 2 years too but there are many women who have waited far less.

I was pregnant 11months after my 1st.

i was preggo 3 1/2 months later. But i didnt have a csection

If you're planning on a repeat c-section, it doesn't matter too much. Give the internal incision time to heal completely at least. For a VBAC, it's suggested to have at least 18-24mo between births. 

For RCS, it doesn't really matter. If you want to have a TOLAC, you would have better chances of finding provider, if you have at least eighteen months (but many providers prefer two years) between the births. 

I am no longer a candidate for TOLAC. I have a bicornate uterus, had to have a repeat c section because baby wasn't moving, and my labors don't progress. I also have had severe symphosis pubis dysfunction with all 3 of my pregnancies.

Quoting louzannalady:

For RCS, it doesn't really matter. If you want to have a TOLAC, you would have better chances of finding provider, if you have at least eighteen months (but many providers prefer two years) between the births. 

I would say, with all those risk factors, I would take with your provider what she recommends. If I remember correctly, you have a female OB who has cared for you because of those conditions, outside of pregnancy, right?

Quoting FarmGirl2B:

I am no longer a candidate for TOLAC. I have a bicornate uterus, had to have a repeat c section because baby wasn't moving, and my labors don't progress. I also have had severe symphosis pubis dysfunction with all 3 of my pregnancies.

Quoting louzannalady:

For RCS, it doesn't really matter. If you want to have a TOLAC, you would have better chances of finding provider, if you have at least eighteen months (but many providers prefer two years) between the births.