Announcing?

Not sure when I want to do it. Or if I do at all. I know eventually I'll have to. I'm afraid to tell my family. My mom and in laws and husband's family know. I'm afraid of their reactions. Also my cousin is having a baby and I feel I'm taking away from them. I'm 23 and married but somehow my age will be mentioned and that I'm too young, etc. I also feel I'm gonna jynx my pregnancy in some way. Idk what's wrong with me! lol If anyone could help me out with some positivity, that would be wonderful...