<human>: Summarize the given text in a few sentences.

So my girlfriend of 3 years said to me a couple days ago that she needs a break. She said that it was nothing that I did and that she just needs time to figure out what she is doing with her life(Medical school). She also said that she has changed since we started dating  and because of it, she feels too dependent on me. She specifically told me that she wasn't breaking up with me (I'm still skeptical) and that she loved me very much and that she can see an amazing future with me (also skeptical). 

What makes me confused is we don't spend that much time together to see why a break would be necessary. We live about 45 minutes away from each other because of my job and I just got back from a 2-week long vacation with my family. We have never had any big arguments however she does seem to be stressed all the time due to school.  

To top it off we have a trip to Europe planned to visit her mom and dad at the end of August!!! She said she didn't want me to go anymore and that she would take care of my ticket. I don't know what to say to her. I'm so hurt that she would even consider that since it's something we've both been looking forward to for awhile now. She texted me yesterday and told me that she loved me and that I was so great for understanding. 

She wants to talk about it a little more next week in person. Should I expect the worse? Should I reach out to her? This has never happened to me before and I'm so confused. Any advice or experience would be much appreciated.
<bot>: Girlfriend wants a break out of the blue before a big trip to Europe, no longer wants me to go. Says she still loves me and says she just needs space.