Wondering... why not me?

This might sound crazy, selfish or simply just need to keep going moment as recently, everyone around me is getting pregnant, even with twins! I have wanted nothing more than be a mom... yet ladies around me who never wanted children got pregnant without even trying ( i kid you not, first try and boom !) and here I am hoping for Christmas, new year blessing only to have found myself running to buy a box of tampons this morning :-(

Top it all my period was late 12 days.... finding this whole thing quite discouraging :-(

Trying to keep my hopes high for 2019!!! But crossing my fingers I get my «  boom » moment! Is this normal to feel somewhat jealous/sad?