Ughh I feel like a slug, I feel nauseous, kinda dizzy, slight headache, my sense of smell has intensified like is crazy I'll just get a whiff of something out of no where, my boobs hurt, af due sept 18, could what im feeling be pregnancy or just af symptoms

UPDATE: what does implantation bleeding look like? Af isn't due for a few days, but I was cramping so I put a tampon in just in case and I took it out and it had a lil light light colored blood and greenish?? So I put another tampon in just in case