Should i be embarrassed/worried ?

So me and my 3 friends have our own little "groupie" Were the best of friends and do everything together. Two of them already had their period but me and our other friend arent their yet. This morning my friend just got her first period.My two other friends are happy for her and so am I. But the girl who just got it is kind of bragging and keeps saying "Yes , im a womann!" And "Wow,your the last one to get your period out of all 4 of us" And im like "Yupp.." Should i be embarrassed about this ? Has anyone ever been in this situation? -___-