Pregnant?

my period is not supposed to start for two weeks, but i started feeling "off" 5 days ago. according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> i just ovulated yesterday. however, i started to have stomach cramps and some brown mucus come out. i took pregnancy tests and i got 3 positives (88cent tests from walmart) and i got 2 negatives (1 clearblue and 1 first response) however, i am more than the 6 days out they say they can pick up. i usually love seafood but the smell today nearly made me gag. also when i took our dogs to the bathroom, the smell made me gag. neither of these usually happen. today my right nipple started to have a really bad burning sensation when anything (even my tshirt) touches it. i also got small pink bumps around my nipple, which is becoming more red. my period is supposed to start on january 15, is it too early to be feeling these symptoms? is it something other than pregnancy? the doctor said to wait until i miss my period to even bother testing, but i want to know whats going on.