Another BFN...and devastated...any words of encouragement?

I'm so upset. Today is my birthday and I thought for sure I was pregnant this time and wanted nothing more than a BFP for a gift. Unfortunately only the control line showed...now I've got some spotting and trying not to get my hopes up about it being implantation bleeding. I've cried most of the day...I just want my baby so badly! We bd on Christmas when I'm pretty sure I ovulated so 14 days later would be today...too late for implantation bleeding...more likely the start of my period. I'm just so heartbroken about this and it makes me wonder if I should even keep trying. I mean if I'm this upset about not being pregnant then how am I going to react if I have a miscarriage? I guess my question is what should I do now? Keep trying, or give up for at least awhile?