My gf is acting weird Please HELP!!!!!!?

ok so me and my gf been going out for 2 months and a half now and in the first to months she was always calling me and calling me for example(I would tell her am hanging out with my friends, that I would call her later and she would then call me back after 5 mins of saying that whice i dont mind or she would be at work and call me like almost every hour)ok so here is some details first off shes been acting different like not begin as loving like a week after i lost my job(maybe lost it because of her), Long story,anyways so other then that one day I remember her grandma told her that if she kept on talking to me on the phone so much she would get tired of me.

ok now to the point so latly I been telling her why has she been acting so diffenrent like not calling as much and not begin as loving and she says that she hasnt changed that it gets under her skin when i tell her that and that if i keep on telling her that she will get distance from me,so yesterday she didnt call me from work all afternoon for the past two days and tells me that when she took her cig breaks her friends were there so she couldnt talk, so yesterday at night i told her whats going on with you and she was like i feel like your on top of me and I siad how if i barly call u,you call me. then I told her dont you want a serious relationship like you siad and she says I guess i really didnt wasnt ready for seriously relationship,so then am like what do you want and she was like i dont know.P,S latly she told me that she mostly just talks to me and that she barly see's her friends and at that point i didnt think much of it.

so then I tell her,what do you want to break up with me and she says no i dont,so heres the twist where am confused, first off she was engaged before ,shes 21 am 22 but her bf cheated on her( so how if you were ready for one before why arent you now, if i asked her many times before we even we went out,second she recently told me that she wants to meet me grandma and before i lost my job she kept on telling me about getting her a promise ring(lost job 3 weeks ago havent found anythign yet but am looking everyday and i tell her),third I met her parents countless times had dinner with them, went to the park,ect,fourth she tell me that I am ontop of her but today she called me on her way to work,then she call me one hour later and had two missed calls one after another and 4 hours later after that she called me again.WHAT SHOULD I DO?AM SO CONFUSED, WHAT DO YOU THINK IS HAPPENING?

Should I call her at all or just let her call me always since she needs space?

Also I told her on tuesday that i loved her and that she was breaking my heart by saying that and she was like i dotn want to break your heart,also she told me that she loved me before/starting to fall for me and last night she told me she just cares for me, but that she lost love for me

last night I talked to her and she told me that she lost a little bit of interest for me because she doesnt feel the chase anymore,then she told me that its because we always stay at home or just go eat,also she told me its because i need tell her lets make love,because last time we did it was on feb 14(long time iknow,but none of us got our own place,plus i still dont have a job)So WHAT DO I DO i NEED HELP BIG TIME,SHOULD I BREAK UP WITH HER OR WHAT,PLEASE HELP AM REALLY STRESSING OUT