Ye, depo injection boleh affect vaginal lubrication sebab hormon changes, quite common lah, a few of my mum friends complained about this juga after their shots. Kering and painful intercourse is actually something you should mention to your doctor or gynae because they might suggest switching to a different contraceptive method, or ada creams and lubricants yang boleh help in the meantime. Don't suffer in silence, okay, your comfort matters and they've heard this before, so no need malu to bring it up!