How do you guys keep going?

I was 99% sure I was pregnant this cycle. I had spotting a few days ago that I swore was implantation bleeding. I really got my hopes up. Started making plans for the next year. Picturing life but I unfortunately got my period this morning and I’m so devastated. I left work early in tears cause I just couldn’t keep it together. I’ve spent the day crying and have been left feeling empty, exhausted and wanting to give up.