Pregnant?

My husband was away the whole month of July. He came home on the 2nd of August and we had sex up until I was supposed to get my period. I was supposed to get my period August 6th. However, I didn’t get it and I still didn’t get it. I took at home pregnancy tests but they keep coming up negative. Is it possible that I could be pregnant? I’m not having many symptoms besides tender breasts and I feel really bloated. I also have a little bit of cramping throughout the day. I just really want to know if I’m pregnant. We’ve been trying since April.