horror stories??

So I'm 12 weeks pp now and at 9 weeks pp I attempted sex but felt it was too painful for it even to go in. This evening whilst husband is at work I tried to insert my vibrator but failed as too painful. It feels like I'm going to tear apart. How do I overcome this? Has anyone had any bad experience from just forcing through the pain with sex after a baby. At this rate my son won't ever have a sibling as I genuinely can't see me getting past this painful stage and enjoying sex again ;(