Is my boyfriend going to break up with me?

So recently my boyfriend invited me to go to Cancun with him about two weeks prior to when he plans to go. He is a pilot and he stated that having a girlfriend who could go on these trips with him is very important to him. We have been dating for seven months and I have already had to turn down two trip opportunities due to conflicts with school. My education is important to me and it is hard to put myself in a position to jeopardize it. I am a 19 yo in college by the way; he is a 20 yo. We had a talk yesterday and he stated to me that he is in a dilemma because he really loves me but he wants a girlfriend who he can do these things with. 

I told him that I am willing to go on trips with him but if he wants me to go, we have to plan these trips together with consideration to both of our schedules and that we need to plan a few more weeks in advance, especially when it involves going out of the country. Typically, he notifies me of these trip plans two weeks in advance and it doesn't give me much time to prepare. 

However, in reply, he said that it is hard because he is only informed of these trip opportunities on a whim so we would not be able to plan ahead in the time frame that I proposed.

I really love him but I don't know where we stand right now. He said he needs some time to "reflect" and I believe he is contemplating breaking up with me. 

Am I a bad girlfriend for being unable to go on these trips with him? Did he truly love me if he breaks up with me over this?