Hello to all, I'm hoping you can help me out.

I've recently (May 2015) had to move back into my childhood home that I lived in from age 1-15. Long story short, I admitted myself into a psych ward in late April of this year so as to not hurt myself and on the discharge date, my dad visited to tell me in person he couldn't "handle" me being at home anymore, so needing a place to go, I moved into my grandparents house to stay for the time-being until I can find a way to recover.

Theoretically, this would work out very well: my grandparents' lake-house is a loving, stress-free environment. But, as I mentioned earlier, this is my childhood house and it wasn't the happiest of childhood's: my dad was so strict and temperamental that I was afraid of him and honestly thought he may kick me out of the house. The stress from home and the strict Christian school I was attending resulted in me developing pretty bad OCD and severe anxiety. By 2nd grade, I was suicidal and was pulled from school. 

But ever since moving here, something has felt wrong. My anxiety has been far worse here than it was prior to moving and during the first month of being here, I couldn't sleep without a lamp being on in my bedroom (which is the room I had during childhood) because I had this overwhelming feeling similar to being watched. The third floor, where my bedroom resides, has always given me bad vibes ever since me and the family moved out. If ever I would visit, I would feel really uncomfortable being upstairs and especially in my old bedroom.

So my question is this: Could it be unhealthy for me to be living here? Could something have happened in my childhood that I'm repressing? Maybe being down here is a trigger for me? Or is the increased anxiety and other unpleasant symptoms merely the result of feeling heartbreak from my own father kicking me out of the house when I needed help?

Thanks for the help!