I need help losing belly fat

So ever since I got into a relationship, I gained about ten pounds (about october), and I really miss my flat stomach. I also got on birth control and it’s really hard to lose weight. Igained 4 inches in my waist.

I work out but get impatient when I don’t show results quickly. I don’t know what to do. How can I lose ten pounds in two weeks? What diets or exercises can I do?