HELP Please

Jessica

Me and my boyfriend have been trying for the past 3 months to get pregnant. I went 68 days without a period it hit me all at once and now I’m 32 days late took a pregnancy test 3 days ago and it was negative. I went to the doctors and they told me to get testing done but I did and there was nothing wrong. Please help. Any advice is appreciated I am 21 and he is 22 in a month he has a amazing baby girl. I just feel like I’m broken