Probably all reasons that were mentioned are possible. But still I believe that the house can also be the cause of these 'unexplained' issues. The place where you live is extremely important, and if the house is not suitable for you, you should think about moving. After my husband retired we thought about living in a quiet village. We have moved but six months later, we realized that such a quiet life is not for us. That's why we decided to move to London. Of course, we couldnt have arranged so many movements by ourselves. The company Removals London has helped us a lot. It provides high quality services and cheap removals London. If you decide to move out, try this company.
https://www.removalslondon.co.uk/ You will find there excellent rates for removals in London.