Worried im making her hate me.

Hello everyone my name is chris perez, i am in a relationship where i feel loved! But also where i feel like she does not care for me! But heres the thing. I have anger issues and i have a problem with starting arguments. So today me and my girl were at our local mall and we were doing fine , she told me she was going with her friends after we were done and i asked to tag along. She told me no but i asked her why when she has a seat available for me to tag along. She kept saying no until I actually really pissed her off. Heres the thing i felt like she didnt want me there like she was kind of embarrassed of me and i got upset and on the ride home i calmed down and i told her im sorry and i kept teling her im sorry but she wouldnt change her mood. When i asked her if we can talk about it through text she got upset and told me like i was acting like the victim which i dont blme her i was but i thought inwas in the right. She told me she could not handle me anymore and i think shes going to leave me. Shes at work rn and not answering her phone but in an hour she will be out and i have a lil surprise for her. I am hoping gor her to just forgive me . Do you guys think it was right for me to go out and buy her flowers and a simple teddy bear with a card or does it seem like it was a bad idea. I dont know i am over thinking if you guys can give me feed back that would be great thanks :(