I have started bleeding 10 days after my last period what should i do?

Irregular bleeding: It is always wise to check a pregnancy test, just to be safe, but assuming that it's negative. . . sometimes we just have an irregular cycle (stress, travel, weight gain). If this just happens once, I wouldn't worry, but if it's a repeating occurrence, then I would see a GYN doc for consultation to rule out infection (like chlamydia) or a hormonal problem or a physical problem, like a polyp.