Please help

So My bf and I ttc baby #2. This is our 2nd month trying and while at my yearly appointment yesterday we talked about what could help. We haven't told but maybe 3 people that we are ttc. Today cousin posted on Facebook that she is pregnant, which I knew, but then I get a text from my very best friend saying I better not be getting knocked up until after my cousin is due and to have as much lesbian sex I want but not heterosexual sex and even went into naming people for my question is how do I tell her nicely that we are trying already? I am hoping this month is month and in about a week I find out that I am pregnant and I can tell her I was prego before she told me not to be. I just don't want her being all upset and angry at me..and I should point out she has no kids, not in a relationship and has a great career.