Should I stay with her?

My gf and I had a talk about a week ago and she said she did not feel the same way because of some mean things I had said and done. We have been going out for just over 3 months and things were great until I did some thing that made her sad. I apologized and have made amends since the incident about 3 weeks ago. (For the incident, I called her clueless and chastised her for not opening up to me and accused her of racial bias when she asked me to take an sti test when she had not asked her previous partners- She is white and I am black). Now, she says she does not want to break up or take time off but that she needs to make more time for herself, which is fine by me. My problem now is I feel I am no longer a priority in her life or that she is just with me for the sex or for something to do. It has been hard for me to keep going knowing she does not feel the same way about us. I talked to her and she said she just needs time to get back to where she was before but I have a hard time dealing with this because I feel every time she goes out with her friends now she may cheat on me or she will begin having eyes for another guy. What do I do?