Can't stop crying

So I feel like a terrible person my cousin is going into labor today and me and her are like sister. I love her sooooo much, but after I got off the phone with her I broke into tears because I have pcos and I'm going to get a procedure done called a "bone biopsy" and i just feel like my road to trying to conceive has been so difficult and this is going to make even harder. I can't stop crying I feel like shit this is cousin special day and I'm thinking of me . I'm trying not to but reality just smacked me in the face.