Sleeping and emotional breakdowns.

I'm new and this is my first time posting so I am not sure if I am in the right area or not, if not please let me know.
Any way, when ever I go to bed or take a nap, even if im tired I get very tense around the back and shoulders and have an emotional breakdown where I often cry. it can sometimes get intense where I just feel like im going crazy. Every once in a great while I will feel like this all day and just stay in bed, but most of the time I feel great and happy during the day. Why does this happen when ever I lay down to take a nap or go to bed? Its like im just emotionally overwhelmed and I can even pin point why. Is this common ?

No reply, not sure if there is another place I can find info on this kind of thing. I don't think its depression and I guess it could be linked to some kind of PDS.

Do you have any other unusual symptoms, even if they are completely unrelated?