I need a vent upset

So I have been trying for baby number 2 for over 2 years now with 1 miscarriage 6months ago..... Everyone around me seems to be getting pregnant which I deal with.. Well my sister who is 6 years older than me with 2 kids age5 and 8 she was married and now divorced this past maybe year and half she has told all family she is gay and she has a girl friend we all accepted it no problem ... Well today she text me to say she thinks she might be pregnant I was like what impossible she then went on to tell me she slept with someone 3 months ago a man ovs as her periods have been super light... She wants me to go tomorrow and get her a test  and do it with her ...if she is pregnant she wants to abort it... I am so emotional right now she has been so stupid and now if she is pregnant she wants to abort were as me I would kill for another baby and can't have it... Ahhhh I am so annoyed and don't think I can be there for her tomorrow to do this test with her!!!'n