Aiyoh, I know this is shocking! Honestly, a double line usually means positive, but you really need to see your doctor ASAP to confirm, maybe go to your nearest clinic or hospital today so they can do a proper blood test, okay? At 10 months postpartum and missed periods, there's a lot your doctor needs to check. Take a deep breath, you'll get through this, and your doctor will help you figure out what's next. Sending you strength!