Yes, it can be wrong. Perhaps schedule a blood test with your doctor. Is your period always on time? You can also wait a couple more days and test with first morning urine. If it's still negative I would call your doctor anyway to find out what is going on.
I'm usually within 2 days of being on time. Either 2 days early or 2 days late.
Forgot to mention that my boobs have also doubled in size. This has never happened to me. A little swelling or discomfort sometimes but never to the point of going from a B cup to a D cup in a little over a month.
Since you've been on birth control since Sept it's possible that it's just a side effect. The first three months I felt crazy on it, then after that I had a few other similar changes you described from 3-6 months on it.
It's possible you tested too early, but if your on birth control and have been taking it correctly for the months you explained then chances are it could be the hormones from the Birth Control messing with you.
Have you been stressed this cycle? Stress can cause you to ovulate late, thus making AF late.
I have never doubled in cup size until the second trimester, so I'm not sure, if you gained weight your cup size will increase too.
If you wait for AF to be 1-2 weeks late, take another test, then call the dr if still negative.
I am NOT on any birth control, just to make things clear.
Sorry, I read it wrong. It wouldn't' be that, because after 2-3 cycles it should be out of your system.
i think you should take another test and let us know how things go it sounds positive to me
I had the EXACT! same thing happen to me last month.. my boobs felt like they would fall off! and I was eating everything and weeing like mad! ... Then got my period(for 3 days) and waited ... took a HPT 3days after that with a big fat Neg to make me feel like crap .. then slowly the symptoms disappeared... I STILL dont know what happened.