I am now two weeks late for my period and have symptoms including fatigue, occasional nausea, sore and enlarged breasts, weight gain, and increased hunger. I took an at-home pregnancy test and it was negative. Today I went to my GYN and all they did there was another urine test and it was negative again. I once heard that sometimes if you're pregnant, it wont show up in a urine test. Does anyone know if this is true and could I really be pregnant?