You could likely bleed or spot, and it could last awhile.
WHY are you stopping so soon? It takes 1-3 months for your body to adjust to hormonal birth control, so sometimes you have to wait out side effects.
If you think birth control hormonal side effects are bad, PREGNANCY hormonal side effects are 10 TIMES worse.
Trust me, I know.
Stopping BC now will mean that you can ovulate ANYTIME, so you are at risk for pregnancy ASAP after stopping the pill.