why am I angry all the time....

I don't know what is wrong with me lately. I feel angry and resentful. I am sad and crying. I barely eat though I do try. I am moody a lot. My boyfriend calls from jail and I can't even be the way I should normally be. He has spent more time calling his kids than he does me. I feel like I'm truly alone. I have no one to turn to. I don't know what to do. I'm afraid that this whole thing is eating up what little of me is left... My emotions are all over the place from anger to sadness to resentfulness.. My mind is racing in all the things that I can't even talk to him about yet since I believe some of it is stuff that could get him in more trouble. My heart hurts... in ways I can't even express... I don't know where I fit in anymore...if at all. He says he loves me and I still love him. I'm waiting for him. I think this situation is eating up more of me than it is of him... He is dealing with it much better than I am. I am angry and dark a lot. I don't know how to go on without him here. That's the truth. He wants me to slow down my writing since he needs to catch up... he only calls me every couple days..and those calls always end up with him getting off the phone worried about how I am doing.. I don't like being angry and sad all the time but I don't know what to do about it and I hate hiding anything from him... I don't mean to do the poor me again... I don't know what to do or why I'm feeling like this... suggestions?