My Best Friend is Pregnant

My best friend called me super excited because she got her very first positive pregnancy test. She got pregnant on her second month of trying. I am going on 3 and a half years of trying. Though I am of course excited for her and happy it happened so easily for them, because I wouldn't wish otherwise on anyone, I can't shake this overwhelming feeling of bitterness in the pit of stomach. Someone please tell me it gets easier. I don't want her ever to feel like she has to hid things about her pregnancy from me or feel like I'm anything but happy for her. But it's hard. I'm just really in need of some words of encouragement right now. Thank you! ❤️