I made a stupid career decision, any advice?

I made one of the dumbest decisions of my life. I recently graduated this summer but I had started back dating my ex again and neither one of us wanted to do long distance, although I had wanted to move away to a bigger city I stayed where we were. About a week after I started my new job here, he dumped me. I’ve been at my job now for 4 months now and I don’t like it. I thought I could talk to one of my coworkers about it since she wanted to leave too, but she ended up telling my managers and now they know I don’t like it. My ex that dumped me made it seem like he wanted to be friends when in reality all he wanted was to be fwb but is too scared to say it and won’t respond to me. We haven’t talked since before Thanksgiving and it’s starting to get to me. I have to stay at my job for 6 months before I can transfer, but since nothing is holding me here I feel like I just want to move away like I originally wanted to do. I’ve been crying for the past three days about my stupid decisions. What should I do?