Am I pregnant? Please answer this?

I've missed 2 periods & I've taken a test Tuesday (4 days ago) that was inconclusive. I am exhausted all day & have to take naps, but at night it's so hard to sleep. Im majorly bloated. I'm super nauseated, smelling anything almost makes me puke. My are bigger BUT they aren't really sore. I gotta pee like every other hour even if I don't drink a lot, & sometimes it's not a lot. I'm cramping mildly right above my pelvic bone. & my lower back hurts. I spotted off & on for a day or two a couple weeks ago also. I'm so confused. Opinions anyone???