Does anybody else have an issue or don't know how else to take something.....

Don't really know how to start this off but here we go....

I am 12 weeks and 3 days pregnant with my fist child honestly never thought I could have kids.. but my boy friend has 2 a 7 year old and a 2 month old we've been together for 3 and a half years.. I know right crazy huh... but does any boy else's baby's father make them feel up set when they(girl) is really happy about the baby but yet the boyfriend doesn't cuz he's already been there done that and tells you that you don't need to be so anxious cause anything could happen. And if something does your gonna be really hurt and it's going to make us different.... I don't know if anybody can u derstand this... but I just feel alone I'm happy that I'm pregnant and I wish I could tell the whole world but yet I feel like I can't cause how my boyfriend feels