Nausea and migraine?

Jenn

Ok so i had my period starting on feb 13th until the 18th, tmi** bright red blood lasting 4-5 days, but since monday and tuesday the 19th i have had nausea every single day since, sometomes during the day sometimes at night. its been every singke day though, i have taken a few hcg and all negative however i got 2 postive ( 1 super early) opk tests. So it also looks like i ovulated early. Im so confused.