Sister pushing me to tell my parents

So I’m about 12 weeks ftm, and my sis is about a month ahead of me also a ftm. When I found out she was pregnant I was the first one she told and I was extremely excited. When I told her I was pregnant she was unsupportive, mean, and made me cry. Pretty sure she’s jealous that I got pregnant at the same as her. But anyways, she told our parents, great. Everyone was really excited for her.

She has put it in my head with little comments just how unhappy my parents are going to be when they find out I am pregnant so I am definitely hesitating. Now she’s pushing extremely hard and making comments like “I can tell mom for you”. And just being pushy.

I’m starting to get the feeling she told my mom and they’re just keeping quiet.