Should I go back home?

I am 23 and I moved out of the family home about 6 months ago into a one bed roomed bungalow. It was already decorated when I got it from the local council and I got a 2nd hand sofa. I also got this beagle from dogs trust about a month after I moved in, my little house is quite cute but I don't think I can cope with living on my own. I'm probably the most unsocial person in the world so I don’t go out clubbing or anything and I don’t have a boyfriend so home most of the time with my dog (who is now my best friend in the short time I’ve known him) but I’m getting really down about it, I have a part time job in one of the book shops in town and when I come home I have a few books to read and I go take the dog for a run in the park so I try to keep busy but at night around about 5pm ish when I’ve went home and it’s getting dark I get really scared being on my own as they are teenagers everywhere and they always walking past and at night when its really quite I hear these noises and I have no idea what they are, last night for instance I even had my dog in my room with me as I was just so creeped out and I few times I’ve rang my mum to come over at 11pm and she’s not happy as I keep doing it but these noises are so scary you would ring someone to come and then they’s the teenagers I can always hear them in the road getting up to whatever they do and my mum has told me if I want to I can come back home with the dog too and I don’t know what to do?