So frustrated..

So the infertility doctor sent me home to BD with DH since he thought I was ovulating. I had a few days of pinching in my uterus, its been 3 weeks since we BD'd.. I took a pregnancy test yesterday and it was negative. No faint line.. not really any symptoms. I am so tired of that evil negative result. Sometimes I really just want to be done with all of this but I just can't find it in myself to quit, but I can't find it in myself to keep trying this hard. I just feel lost. DH doesnt know what to say when I get upset. It's frustrating to need so much help from family and friends who just don't understand and can't grasp my reality. I know theres other ways to have a child, but I just don't want to give up this easily, but I am so emotionally exhausted. I don't know what to do or where to go from here.