Not much at all, but: A main reason we have a woman start a pack of birth control pills when her period starts is because the appearance of her period generally means she is not pregnant. We try to avoid starting a pill pack in a pregnant woman because she doesn't need the pills. If she starts pills and MIGHT be pregnant, she can do a urine pregnancy test 3 weeks later to find out, while still on the pills.
Answered 11/23/2019
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2 doctors weighed in across 2 answers
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
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