Thanks for all your replies! I should have mentioned that I no longer live in that house, I had to sell it after we split up. My ex was a bad man - a con man, violent, liar and cruel man, and I had to throw him out eventually. He now works as a 'medium' conning other people doing ghost hunts (like you see on Most Haunted). I've seen the videos on his YouTube channel and he allegedly get 'possessed' by the spirits and used as a host....and is a worse actor than Derek Acorah!
I would like to add that it happened during the day and I was just surfing the net, sober and not on drugs. What I witnessed was real and not an hallucination! It took me bloody ages to pick up all those dog biscuits!

My ex didn't have much to say about it as he was out and didn't witness it. He wasn't a ghost hunter at the time and never revealed he thought he had medium abilities - but then he wasn't true about himself at all sadly.
I believe it was attached to him because it stopped as soon as he left and I felt at peace as I did before he moved into the house.
I'm with my soulmate and he's perfect and has healed all the pain