Am I the only one?

Do you guys ever feel like an emotional wreck and you just want to cry because that is me. My boyfriend seems to be mad at me but wont tell me why, he just seems really distant. I haven't been feeling good about myself lately and I don't know why. I feel like I'm a burden to people and they are just tired of me and someone told me my bf ex still loves him which makes me uncomfortable because I feel like she is so much better than me and I don't want to lose him because I love him and I've never loved anyone before. I'm stressing that next year I have to go to college and I haven't gotten accepted to the school I want to go to yet, I won't know till the fifteenth. I haven't had a period for 118 days no joke I havent had one since August and we went to the Dr and they just told me to wait it out and then take birth control. I just feel like breaking down and I don't know what to do, I don't want to keep being a burden to people it's just stressful