I've been on the pill femme tab for about 4 months, i am sexually active but always use protection, my last period was early and now it is 10 days lat?

Pregnancy test : Make sure you are taking birth control pills daily and as instructed. Take a pregnancy test even though very small chance, there is still a chance. What age did you first start your menstrual cycle ? If recent, Sometimes it can take 1-2 years before your period becomes regular. If you have had irregular periods in the past despite taking the pill, you may want to discuss with local doctor.