Suggest Treatment For Nausea And Motion Sickness

I have been feeling incredibly nauseous very often lately and I can t figure out why. I ve had motion sickness my entire life, but only when i m driving or doing something of motion that is out of the ordinary. Lately, I m nauseous when I sit down, when I lay down, when I walk, when I drive (usually only happens if i m a passenger and not the one driving, but not recently), when I stand for too long, when I wake up from sleeping through the night, anything seems to trigger it and it almost always makes me throw up. I m on the same birth control i have been for over a year and am not taking any other medications, and two pregnancy tests came back negative. Should I go see my doctor or do you have any tips or suggestions for me?