Thank you for sharing your question and visiting the EmpowHER community.
I know it can be frightening. You have done everything right to try and prevent an unwanted pregnancy. You are probably not pregnant-you are on the pill and taking it correctly, using condoms and two tests came back negative.
I would take another test on the 13th and if that comes back negative then you are fine. You can always go to the health center at your college and they can draw blood for a more accurate test.
To ease your mind, your period is probably just late which is normal. Try not to stress about it, I know it's easier said than done.
Keep me updated and let me know if your period comes.