How long does spotting last while on birth on because it’s been three days now...?

No way to know. Could last hours, could last several months.

There’s no way to tell. It’s a normal side effect and it can come and go at any time, on any pill. Nothing to worry about.

Lol three days...it can last much longer then that. It’s lasted 11 and 17+ days for me before. Just gotta wait it out. Unfortunately.

I’m in and off spotting light bleed then nothing for a week then bk to how it’s starts all over again iv been in my birth control nearly 2 months now doc said the adjustment fraze is 3.6 months x

There’s no way to tell everybody is different

There’s no way to know how long it will last. It could be minutes, hours, days, weeks, months.