Friend got pregnant accidentally

I have only been trying for 2 months, unsuccessfully, to get pregnant so I know I do not have much room to talk. However, we have been doing all the tracking and peeing on sticks telling us when is best to go for it with no luck. Recently my 24yo friend, who had an alarm set to make sure she took her pill everyday on time, got pregnant on accident. I am happy for her but it also kind of frustrates me which makes me feel like I’m being selfish or like a terrible person for being jealous I guess at the situation. Has anyone else ever felt this way?