Weird question

Have any of you been pregnant and then announced it and all the attention been on you and then about a few weeks later your sister/brothers gf announces they are pregnant and the lime light is all on them and nobody bothers with you? Does anyone have any story's about this and how has it affected you? My sister in law has just announced her pregnancy and the whole family are over the moon for her and me and my husband are trying for a baby but none of the family know and I'm just really scared incase I make her feel pushed out or upset by doing this. It's hard for me because I had a misscarriage in January and she is about the same amount of weeks as I would have been so that hurts me to start with but I just don't want her to think we're copying or anything. What's everyone's opinions story's advice ect?