Do I have trust issues?

Yea hm, just would to hear an opinion if that's an issue I have to work on or I have a right to be a little suspicious (honestly I feel really bad for being suspicious and don't know how to deal with that, cause I don't know if my suspicion is rightful or not).

So, me and my girlfriend have been together for some time, I'm in my final uni year, she's working (sales position in tourism). Well, I really love her, problem is I rarely see her. Its not that she changed in her behavior, it's always been like that. I mean, understandable since she's working, but on the other hand, the last 3 weeks I saw her for maybe 2 hours... She basically worked the last 3 weeks straight, without a day off (now, I'm not in the US or Europe where u have strict regulations). Every time, like in the evening, we might have time to meet, something seems to come up, like clients arriving, dinner/event she got to attend, etc. Well how that makes me feel, u can imagine. Especially since I have been cheated on before... But then, she calls me every day, randomly, to talk to me or tell me I love u, gives me small things that make me happy and when we meet is very caring (like when I came from a meeting to see her she knew I havent had lunch she cooked me something and brought it, thought that was a really sweet gesture). U know, there is these two sides I see, suspicion, but then again she's really caring. Its such a weird feeling, I don't know what I should think about that?