Confused ? Dont know if i should even bother.

I have been hurt and confused this past week, because the Friday before last I got some news I didn't know how to take . I've been officially dating a girl for awhile now and things were good , I was very happy for the first time in awhile but from Monday to Friday of that week I noticed she was being a little different . she was working a lot of extra hours so I didn't payit too much attention . She still called me and I got to see her on her breaks for work . She seemed stressed and tired and wasn't in the best mood I asked her what was wrong and she said nothing just work is so draining and hard and that she wanted to sleep . I was supposed to see her that night but fell asleep before she called . The day before this break we took together I was in the giving mood and decided to get her some flowers she gave me a bunch of kisses and hugs and told me how much she loves me and that she was Lucky to have me etc etc. Jump to Friday I had Burial Services to attend to in the morning and a gathering that went on after till almost late . I called her when I knew she was out of work to see if she was going to come and stay with me for the first time since Sunday and she said she was going to her friend Kaylas house that she needed a lady's night . I then asked why did she need a girls night when she agreed to see me that night after she found out she had work and couldnt attend services with me . She said I did nothing wrong but the reason she has been distant is because she's been thinking about her ex boyfriend that it wasn't fair to me she doesn't know what she wants and that we would have to talk and that she still cares about me .that was over a week ago she hasn't called me and I gave up calling her because I called her twice the day after and she didn't call me. I ran into her when I was working andwaved she waved back and said sorry I.never called u back I said are we still together or I just want to know what's going on she didn't say yes or no and said she would call me after work . She never called and I've been giving her space but it hurts because she was so loving and cared for me very much before this sudden change in her behavior . I don't want to bother her but I want to have a.conversation with her at least find out what's going on and I just feel like she doesn't care for me at all and doesn't have the heartt to tell me herself . But maybe she is confused either way I just wish I could talk to her I was thinking I wnt her bck but how . Leave her alone or try one more time to talk to her