First of all sorry for my bad english as it is not my native english.

I'm asking for help as I don't know what to do. I'm in an LDR for about 1 1/2 Year now. She lives around 120 km away from me. So far everything was cool, happy and joyful. We see us every two weeks for about 4 - 5 days.

Currently this is the third week we are separated from each other. In the first week everything was as usual. She send me cute messages and called my using nicknames like "sweatheart" and things like that. She also always asked how my day was going, how I am feeling and so on. But since the Saturday in the first week something changed. She didn't contacted me anymore and I had to initiate the contact. When she reply shes somehow cold. She doesn't give me any nicknames anymore and does not send any hearts or kiss emojis anymore. Something seems to have changed. In the past she nearly contacted me every day but now I sometimes do not hear anything from her for 2 or 3 days. She just contacts me if I write her something or if she needs help for something or has a question on a certain topic.

The last time the contact me "warm" was last Friday. She called me and told me that she has to cancel our vacation in march with our friends because of to much work in the university. I thought "What the fuck, that was planned in December and now you remember that you have shit to do?". I said it was okay and i can understand her. Then she called me Sweetheart Im sorry and so on and stated out that she has not much time to talk. Afterwards she send me an message and said that she feels very sad about it but now she feels better. That was all. After that I haven't heard anything from her.

This morning i also contacted her and ask how it is going. Again she replied very cold and didn't ask anything about me. She replied short. Afterwards she contacted me because shed needed help from me to phrase an document... and I have helped her. That was all.

I really don't know what to do now. Seriously. The other problem is she is coming this Friday to me for the weekend and I don't know what to do. I even don't know if she is coming because of me or to visit her friends which are living here and just needs a place to stay because she has stress with her mother. Ah yes, she has a very very bad relationship with her mother. Her behavior fucks me up somehow and I don't know why she is acting this "cold" or why it changed from one day to another. Sure I haven't ask her if something is wrong or something like that.

I am currently a little bit ideales and hope to get some suggestions. Thanks a lot!