I'm sorry you're feeling so off. I've been there and I can promise a lot of other women reading this article have too!
First, it could have been too early to test. That's because often, implantation (which is when the fertilized egg adheres to the wall of the uterus) takes longer to occur than most of us think. It typically happens between six and twelve days after ovulation. What that means is that implantation can happen as late as just a couple of days before your period is due. After implantation happens, it then takes around two days for a pregnancy test to turn positive. Which is really confusing! You would think that when "conception" happens, you would be able to get a positive test right away but you have to wait until that fertilized egg is attached and ready to send out the hormones needed to get a positive pregnancy test.
Now, since you're using two forms of birth control I'm going to take an educated guess and say your symptoms are not pregnancy related at all, but related to an extra-miserable premenstrual week or side effects of your hormonal birth control.
If your symptoms continue and you are still getting negative pregnancy tests I'd put a call into your OB or GP to see if your birth control is the culprit.