Is my vagina broken?

Krystal
On a serious note:
 I'm 12 weeks post partum, vaginal delivery, I did tear-2 stitches- no other complications. Cleared from Doctor for sex, said everything looked good, currently have IUD. 
Sex is still so painful! We waited 7 weeks for the first time and I just couldn't. Second time I tried so hard to get past the pain, but again, I couldn't. Third time is the charm? Right? Unless you're me, and your vagina is broken...
I don't want to even try anymore. What could be the issue? It can't be deep. Shallow is ok, but that really limits any movement. Tried different positions, definitely used lubricant... 
Any ideas?