Family members pregancy announcement after I miscarried

I misscarried on the 13 of May at 6 weeks pregnant. I was absolutely devastated and still think about it many days. I told a family member at the time and a few weeks later she informed me that she too had had a miscarriage at 5ish weeks but she didn't realise she was pregnant till she lost the baby. We are both 22 years old and in stable relationships. Yesterday she told me she is now 3 months pregnant. I know it doesn't make sense but I just cried and became very angry. Of course I have very happy for her and I wish her the best of luck. But is what I'm feeling normal? And if anyone has experienced this does it get better with time?