Oh boy

So my wife asked for space and im currently staying at my parents... weve been married 3 years and been together 5. Things were going extremely well, we had our budget setup with our pay for the next 5 years and all our trips planned out and just all around nothing really seemed out of place. We had our few fights here and there but immediately made up right after each. 2 Weeks ago she sat down with me and said she was done and i was to get no more chances.... i was crushed.. it blindsided me like a freight train... I immediately tried to find reason as to why this sudden and rapid change of emotions occured. Like not even 1 week prior to this we were dancing in the kitchen, hugging and kissing, TRYING FOR A KID, and we even bought tickets to an event that was $500 dollars and non refundable... that event is in 3 weeks... im so so so lost and ive done some stupid mistakes since the separation because im so completely scared of losing her. This woman was the greatest person to ever come into my life and i want nothing to do but make her happy and she allow me to stand by her side once again... She has told me she doesnt love me and she has kept speaking over the phone to almost non existant now. She will text me back but she has an aggressive tone in doing so and when i text i try to not bring up the relationship... its more like "hey hope things are going well for you today! Weathers been bad, etc" But my friends are telling me to give her space and time and she has started to go out with some of her friends and drink... and started staying at random peoples houses that NONE of us know where she is.. she hasnt drank in the 5 years we were together except at our wedding.... she has meds that forbid her from drinking as well so thats a huge safety concern on my part... she has told me she doesnt want to divorce but idk if that was to get me off her back or not... no paperwork has been officially filed for anything... im so lost and hurt

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Edit: Just want to say thank you all to those that have been responding... you guys have really shined some light on a situation that i truly dont deserve and it still hurts as its been barely 2 weeks but man thank you all.