Nita,
We all have those moments and believe me we all regret them and repeat them. Don't bash yourself up, your doing your best and babies are not easy, they're demanding little bundles, who constantly crave your attention.
You are not a bad mother, your tired and exhausted and working hard. You need to get some rest, try to cut the visitors down till you can get some, explain the situation to them, I'm sure they'll understand.
Hope your feeling better soon, best of luck to a fantastic mother who's giving her all!!!

Kelly