Am I pregnant?

Been trying to have a baby. The past couple months we have been trying. In September after my period, I started having symptoms. I took a test bc my cousin told me it sound like I was pregnant and it was a negative result. And my period came late. October I was having morning sickness throughout the day, my breast were sore and tender, and I didn't have an appetite for anything. November came and I started feeling better and my period was 5 days late and I started having cravings that weren't normal and had other symptoms. December my period was a few days late and I still have symptoms. So I took a test tonight and it was negative. My mom informed me that when I took my other tests that it was probably to early to detect a pregnancy and I should try later on so tonight I did and it was negative. What do you girls think.