It is possible that you got pregnant since you ran out of the pills, which would explain your symptoms and why you still didn't get your period. Once around four weeks past since you stopped taking the pills and you still haven't had a period, a urine test should show that you are pregnant. However, if you are not pregnant, these symptoms may also just be due to hormonal
fluctuations as your body returns to natural cycles after stopping the pills. If that is the case, you will probably get your period soon, and that will tell you that you are not pregnant. I hope this helps, please let me know if you have any more questions.