You say you started taking birth control on June 21st. When did you take the last pill of the previous pack of birth control? The placebo week should only be 7 days, so you should have been taking active birth control pills up until June 13th. If you waited too long to start your most recent pack, that's why it didn't work.
did you by chance take any antibiotics during june? even low grade ones for acne?
no i been on birth control since march
no birth control would not change when you conceived. you conceived on the typical day a woman would conceive. birth controls not 100% and honestly you should be on it a month first.
You only started on the pill in June?? When you first start on birth control, you need to give it ATLEAST 7 full days to become effective in your system. Sometimes it even needs for a full cycle to adjust in your system. Are you sure of your date of conception? You could have ovulated later or possibly earlier.