Friend lying about pregnancy? + ruined baby announcement party

I'm in a really tough spot mainly because I want to believe her so badly, my BEST FRIEND recently announced she was having a baby in November so my other friend comes up about how she had a baby at 14.

Well of course we talk about it and she goes through all these things that happened, well here's where it confused me the most- her parents apparently didn't know? She was raped, and gave birth in a kiddie pool in a back yard. We all felt very bad and actually sympathized for her until her mom posted on Facebook that she was pregnant and due in October this year, and how this was her FIRST baby. We all are very confused so we asked her about it and now shes saying she gave the baby away and that the dad wasnt in the picture because of relationship issues.

She's even on Facebook saying how's she nervous about birth and how things are gonna be weird expecting a kid for the first time. - but even if her parents didn't know how did she start an adoption process and she said she didn't go to the doctor, didn't show and doesn't have pictures of the pregnancy at all.

My best friend ( November baby #2) is upset because she ruined an announcement party that she put together today by announcing mid party that she was also pregnant and that she was due sooner than my best friend, she's heart broken that it was ruined. And I'm worried that this baby isn't real either. - but now my friend and I are trying to replan a party to celebrate HER Second baby. Since it was spoiled today...

So with this being said, would you believe my friend about having a baby on her own at 14? And how would I go about planning a baby based party to celebrate? Or should we just wait till she knows the gender and make it a celebration and a gender reveal?

I'm dealing with a very upset expectant mother and a jealous friend and have no idea what to do...

ID ALSO LIKE TO ADD- my friends first pregnancy was with an abusive man so it was very stressful for her, this time around we wanted to make it as positive as we possibly could...