Hi Kath,
Firstly you should know your feelings are normal. I too just finished my long haul in Jan and are going through the same feelings, I even distanced myself from my favourite site "here" thinking it would help. I have recently put as much time as I could into rebooting my business, but unfortunately it is a process we have to go through, so don't be too tough on yourself lovely lady, as hard as it is we have to realize we will not be back to our old selves for sometime.
It is important to talk about your feelings to people that understand.
Cheers Jen xx