Hey mama! Technically pwede na kasi the depo is effective after 7 days, pero since you're just 5 days in, mas safe pa rin na maghintay ng dalawa pang araw para sure na fully protected na talaga, withdrawal lang ay risky kasi kahit konti lang, may sperm sa pre-ejaculate na maaaring may dugo talaga. Better safe than sorry, diba? Sige na, ask your OB kung may follow-up check-up ka, pero para sa peace of mind mo, just wait the full week nalang, no hassle!