How can I feel better ?

Five months is way too soon to be talking about moving in together. If you can't keep your feelings to yourself on this you may want to get into some talk therapy to both curb your enthusiasm and to keep you from destroying this relationship. If you keep pushing for something this prematurely this woman is going to realize you're emotionally unstable and then she might not want to be with you anymore. 

Five months is too soon to live together, a year is more appropriate.

5 months is not a long time to get to know each other before moving in. You seem awfully needy. You take offense to the fact that she needs her own space once in a while. No couple should ever be together 24/7, no matter how long they’ve been together. If her need for alone time hurts you, that shows exactly why you should not live together. She is her own person, and does not wanna spend every minute with you. It seems like you have issues with being alone, and you want her to fix that for you. I suggest you just get on with your life. When she is ready to live with you, she will let you know. Don’t keep pressuring her. That will only push her away. You don’t need to live with her to enjoy her company. The more you obsess over this, the more I think you aren’t ready to live with her. 

You sound like my ex , and we didn’t last because he pressured me to be ready when I wasn’t. It made us living together uncomfortable because I did not want to live with him , especially because I wasn’t financially ready. You are going to ruin your relationship 

Reported for SPAMMING

Bruh its just 5 months chill out.

You have only been together for five months, so don't try to rush her. 

We fall madly in love, don’t we, thinking (feeling rather) that it will last forever and is enough for a serious relationship. However, it’s very hard to live on an emotional high for very long. Eventually we start to come down from the ecstasy, excitement, strong passions and desires, typically after around 18 months to three years (people vary of course). If couples are friends, discuss their mutual values, shared ambitions, interests, etc., in some depth (obviously there will be some differences, which help make relationships interesting), and make plans, work on their personal development, etc., this can develop into a long and wonderful relationship. If one party feels insecure or low in self respect, it can make for a difficult partnership. It's easy to behave at our best when in love, but marriage, for example, requires a lot of self discipline, sacrifice, compromise and flexibility. If a strong friendship is not in place, the relationship will probably peter out eventually - or worse. Quite often we fall in love because we are lonely and allow ourselves to be won over by anyone who takes an interest in us. Thus we give away control to somebody else if we are not careful. This is another reason for taking things very slowly, and really getting to know someone before committing ourselves or getting too emotionally or sexually involved. Sex can be emotionally bonding, which is disastrous if the other things are not there: strong friendship, similar values and standards, common interests, etc.

Your girlfriend is right.Don't rush into anything.Bet you won't feel the same about each other a year from now.