I am in this ultimately awkward position

I am staying in my boyfriend's home with his sister.
In about 10 days I am moving to another country.
In a few days I will be moving to an annex for few days.
My home is rented on Airbnb.
I made this awful scene, a depressive episode in front of him and his sister.
And for a couple of days I will need to be around.
I am being most of the day outside the house as I am avoiding them.
It's awkward and I don't feel so welcome at the moment.
I just arrived, I was staying on a bench for hours and they're not even home. I remember they were saying they'd go to a play or a concert. I know I shouldn't dwell in this thinking but there's this yelling voice saying "they're having fun finally without the sickening me"
I need to rest, it's challenging.