I just got the Covid vaccine and am wondering if it will impact my birth control or mess with my period.

No, there is not a drug interaction so your birth control will still be effective if you take it as prescribed. However, there are some reports from people about it impacting a period. While this has not been backed by studies, it is reasonable to think that an immune response to the vaccine might cause your cortisol levels to briefly increase – as can happen with stress to the body – and may interfere with your flow. However, if you’re on birth control the chance of that happening would be minimal.