After reading your other posts, I would recommend you don't meddle in her affairs, i.e. contacting her physician related to YOUR concerns about possible medical issues going on with her. Do not do this.
If she doesn't want to talk then leave her be. Meddling would only make things worse. Don't push her. I would consider the meddling intrusive.
"im giving her the space she needs but to know how long to it take for her to get back to her old self its me birthday next week and I don't want spend it alone with out her."...........Well, she may or may not return to her "old self." Sounds like she has changed her mind in regards to what she wants or she is just confused about things and needs her space to sort things out. Unfortunately, you can't control how long she needs her space.
Did you all have any major problems in the relationship?
Oh, I'm very sorry. does she live in a different town than you??
I think the only thing you can do is keep the line of communication open-- as in if she wants to contact you and talk or get together, that you allow that. but you can't initiate it or push right now. She may need some thinking time.
Do you think she has started seeing someone else? I think that would be something I was suspicious of. Because 'something' happened. Either she has been harboring this for a while and finally acted on it or 'something' has happened recently. I wish you could know this for sure but sadly, we often don't get all the answers when someone breaks up with us.
I would keep VERY busy right now. Schedule lots of things with friends and family. Exercise, throw yourself into work, keep a journal and then see what happens over the next month or so.
peace