Does taking birth control pills cause infertility?

Patient's question:

Took birth control pills, had bleeding on the 7th, still bleeding now, not uncomfortable, no itching, no odor either

Doctor's answer:

Hello, frequent use of birth control pills has a significant impact on pregnancy. Under normal circumstances, taking birth control pills 2 to 3 times a year is not very harmful.
It is recommended that during the later stages of trying to conceive, you can visit a hospital for a fertility check-up to examine your health.