My girlfriend is making me feel unimportant.

When were still in college, my girlfriend was already making me feel unwanted. She seldom made time for me. We were both engineering students way back. Since it is a life-and-death degree, I understood her way of treating me. She was so busy aiming to the top that she forgot I was waiting for her to realize my presence. With her strict parents, I still understood why she became like that. Ukraine women are known for being family-oriented and she’s not an exception. When we graduated in college, I was glad not just because I survived the hell years of my student life, but also because I knew she will make it up to me. I was wrong because she was again busy with her career. I was busy with my career too but I always find time for her. I never make her feel unwanted. I wonder why she cannot do the same. I know there’s no one else. I do not doubt her love because I’m pretty sure she loves me just like how I love her. The only problem is that she’s making me feel unimportant. We already talked about it but same things happen after few weeks. How should I ask her to see my worth? How should I tell her I am always waiting for her? How should I ask her to prove she loves me? I am playing martyr and I know that. I just need an advice on this.