Jealous and cant get past it.

First, I'll say I know I'm jealous and ridiculous.

Well my boyfriends brothers girlfriend, let's call her Jessica, found out she was pregnant. Announced it the day after she told everyone how she didnt want kids even lol. Well the month after I found out I was pregnant! At 9 weeks I had a miscarriage. I was due April 5th just 2 weeks before my birthday. And she is due March 4th.

Well, I'm jealous. I cant help it. Jealous to the point where I dont like her and get angry when the baby is mentioned. I hate that I feel this way shes an amazing sweet person. I like her a lot shes great but I get into these moods where I hate her cause I'm so jealous. I just wanna have my baby so bad. How do I get past this. Were actively ttc and every month I get a period I hate her more somehow. How can I be happy for her? I need to stop feeling like this.