Feeling upset

So I went to work yesterday and one of my coworkers came in and said I’m pregnant and everyone was excited for her I am to a little bit so upset at the same time they keep touching my belly saying u will be next. I lost two baby’s already 1st five years ago and my 2nd 1 year ago it really sucks. I’ve been trying again and nothing. And all I want to do is be happy for her but I can’t I’m still upset about my miscarriages and also not getting pregnant again. Sorry to be a pain talking so long just needed to get it off my back thanks for reading this