Need advice

Tori • Married with 2 year old mini me :) B/G twins due 4/2020

Hi ya'll I have a weird question for you.

I posted about 2 months ago about how when my husband and I announced we were pregnant, my sister in law tried to steal the thunder and also acted naseaous and said she was too (she was a few days late but hadn't tested). My husband was really upset but I tried not to let it get to me, she was new to the family and maybe she just really wanted a baby too. I thought ok great, two cousins close in age this is a nice thing.

Well turns out she wasn't actually pregnant at all her period was just late. The next month at Thanksgiving she and my brother in law made a big spectacle about how they had a miscarriage and they were devastated.

Ok so fast forward to Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>. She announces that she is pregnant again. I congratulate them and tell them how exciting. My mother in law looks annoyed and says let's talk about this another day.

Christmas day we see them again and she tells me that she is 6 days late but she had tested the night before and got a negative. I te her I'm sorry again.

My husband asks "Are you guys trying?"

"Sort of". She tells him.

"Well what does sort of mean? You either are or you're not."

Then she admits that she takes her birth control pills every day.

I am kind of shocked. Like I seriously don't know if she doesn't know how birth control pills work, or if she thinks she's "late" because of the last week of sugar pills. I seriously don't know what to even say to her. She's 24 so I would think that she knows about the birds and the bees.

I am worried that she is going to announce she might be pregnant every month because she's done it for the last 3 months already.