Stress over in-law RANT

Hey, so I’m currently 5 weeks pregnant and my sister in law came from another state to visit. My husband and his family has been going through a rough time because of a sick family member. We also found out that same day that I was pregnant. So in order to lighten the mood of the situation, we agreed to announce our pregnancy to his parents and his family. When we did, they were so overjoyed with happiness they started crying. But later that night sister in law (who I’ve had problems with in the past) strolls in and announces to everyone that she’s also pregnant by three months (the same day I announced my pregnancy and tried to copy the way I did it) and that completely crushed me. I wanted to have my own spotlight because it’s my rainbow baby. Sister in law never really liked me and always saw me as competition for her brother(my husband) and their parents attention. Her announcement however caused the family’s mood to shift because she’s young, a teenager. Instead of causing happiness, she had caused stress. She has this tendency to bring bad energy and negativity when she’s around because she loves to argue. She even called my baby, just cells, and said her baby is more of a baby than mine. Being in the same room as her just causes me stress. I’ve had panic attacks because of her and I’m scared itsgoing to affect my baby. I don’t know what to do. I wanted to make the entire weekend a happy one with this great news but she made it completely horrible because she hid her pregnancy for three months then decided to tell everyone the same day I did. I’m hurt and I’m stress and I have to prevent myself from crying because of what she did and how she makes me feel. I don’t know what to do, I feel lost.