I'm 18 years old I'm 22 days late am starting to get nauseous at times. My last period was 9/9/16 I have taken a pregnancy test and was negative. I pee alot more than normal I drink more than normal I'm more tired than normal I'm moody. I have gained weight. I have signs and symptoms of being pregnant but negative hpt not sure if I should wait 2 more weeks and take another test or go into the doctor for a blood test idk what to do?