Baby fever and depressed

My sister in law Is pregnant with a baby girl I guess I can play with her for a while huh? I'm so upset I thought this was my months but it's not....of cource it's not....it never will worst part is..I've been having dreams of being pregnant and having my Bfp and everything...so upset. How do u women keep going on it's my 6 month marker...just bought baby girl clothes for my niece...imma love her to the moon and back but his family keeps asking when were going to start having kids...I haven't told them were kinda trying..I think imma use ops this month and really try