Ugh!! I give up!!! TMI

I have all the symptoms, but negative tests!! I haven't truly had have a period since April 9th!! I tested May 15th..Negative test. (first response) +I have had nighttime nauseous moments, weight gain, boobs getting bigger, weird cravings, attuide problems the whole 9 yards..last week instead of my period I had brown discharge with bright pink blood for one day and just brown discharge (only when I wipe) for 3 days..I just took another test just 10 mins ago and of course negative I'm at my wits end..any comments will be greatly appreciated..