Pregnancy symptoms

Does anyone else feel like you are definitely pregnant, but keep getting negative tests? I just feel completely different then when I'm sick. I'm nauseated, bloated, stopped up nose, headaches, backache, acne all the time, tightness of the pelvis, lightheaded, other things on top of that. Past two days I had negative tests, but after getting tweaked. Looks promising this month. I'm 10 dpo, and I got a definite positive test with my 2nd son on 10 dpo. I'm supposed to start my period on my son's 1st birthday Wednesday. I hope I get a positive test soon.