Emotional venting

Ever have a day where you wish you could either start it over or forget it even happened? 
Hubby and I have been TTC for almost 7 years. I really thought I might be preg this month because all I did was spot a little. I am really bloated and nauseated. My last real period was on March 3. BUT, I have taken several HPT and they have all been BFN. I feel so discouraged and emotional. I am so tired of the cyclical hope and let down. I wish I knew why I still feel bloated and nauseated. More than anything, I want a child. So badly. My husband and I have prayed for so long for one. 
Am I supposed to just give up?