Life Help

I have never thought of myself as weak, I feel like I am a strong woman and have strong opinions.  I guess that's why I feel so helpless right now.  I will not go into detail as to what is going on, this is obvious a very public forum and while I don't mind people knowing some parts of my life, I don't want my daughters getting ahold of this specific post when they get older.  Letting them know details will have to wait for a more private conversation.  That being said, I feel like I have had the rug pulled out form under me and I don't know how to get back up.  I have had things thrown my way for a while now and feel like I have handled it well and with dignity but even though I may have seen something like this coming, it has hit me harder than I ever imagined.  Has anyone ever been there?  I have always been a happy person who loves her friends and craves that time.  Right now I feel like secluding myself and not doing a thing.  I am not sleeping, I eat only to have it not stay down and doing anything, even one load of laundry feels like I am running a marathon.  I know some people will call this depressive behavior, I do not feel like I am depressed.  I do find happiness, how can you not when you have 3 beautiful children to take care of?  Yes it is work, but they are my world and they can put a smile on my face in the worst of situations.  However, I still feel it.  I feel like it is a shadow hiding and lying in wait until the perfect time.  Like the feeling you are being watched, ti is uncomfortable and then it pounces and reminds you of how bad it is.  I don't know 100% why I am sharing this and I promise I will not be making this blog sad like this form now on.  But blogging is supposed to be real right?  That way people can come and learn something or possibly give some advice because they have been there.  So, that is what I ask.  Has anyone been there?  How do you pick yourself up and try to put yourself back together when you feel shattered into 1,000 pieces?!