Okay, so a lot happened.
This evening we began to hear noises coming from outside, and it sounded like something hitting the window in the back end of the house:
My mother and I have been searching outside, but nothing or nobody turned up.
As the evening progressed, the dog started to act weird and stressed from something (part of it may be the noises), and he began to bark and pace around. I let him outside and he wouldn't do anything. He kept on staring at something in the distance. I also got a feeling of being watched, but that was probably because of the noises against the windows. I thought someone was throwing stuff at the house (but no evidence had shown up from it).
Anyways, we found nothing and as of now, the noises are becoming less constant. I still feel uneasy though, and we have not found anything on the ground or whatever. There is no real source from the noises as well, except that they are come from one side of the house, in the back.
I also wanted to mention, I had my TV plugged in, and I left the room for some water. When I came back, the TV was turned on. It wasn't showing anything, since I don't have any cable connected to it, so I found it weird. I turned it off and unplugged it, of course. I always unplug my TV, because I remember it has turned on without anyone touching it before. I still have no explanation for that and what could have caused it.
Also, for the second "topic": the orb. This happened during the noises, around 11 at night. While the dog was pacing around, he stared into one of the rooms on the main floor. He does that pretty often, and if I see him do it, I usually take a picture for some reason. With the flash of course, since he will stare into the room in the evening/night. So I took a picture of the room with the flash on. Usually nothing really turns up, but something did this time. It happened after the flash, and I don't really know if it was caused by the flash or not. I'm not an expert on photography.
So I decided to put it here.
It's on the bottom of the picture, and it is a white circle. I don't know if it's paranormal or not. I found it strange though.
And if you can't find it, I circled it: