should I call her?

I used to go out with this girl I loved very, very much. But sometimes I would be so mean to her, and cheat on her, but she would always take me back. Finally about 7 months ago I was being really mean to her and she wouldn’t answer my calls. I tried for like 3 weeks to call and text her, but nothin. She wouldn’t respond. I haven’t seen her or talked to her in 7 months. I haven’t even tried to call cause I’m scared of getting rejected by her. The truth is though I’ve changed and I want her back so bad. I don’t know if she’s moved on though. That’s also another reason I’m scared to call her. Have I let it go too long? Should I call her?