Anyone else feel like a shadow?

I have had a rough past three years, between a death in the family, that turned my world upside down. To a hard spot in my marriage and in between having two babies. And I slowly felt like I was losing all of my social connections. Now I feel totally lonely, no friends really. Besides my husband, my dad and my babies, I don't talk to anyone. I just feel casted aside, partially my fault, but I feel like other friends of mine didn't have such a hard time letting me go. And even though my marriage has come through alot, I'm still feeling lonely. Like no one cares. And it just hurts.