I know that with these tests that false and positive results are common, this can occur because if there’s even a slight amount of blood in the specimen it can cause this result. On a more positive note you have an appointment to see the doctor and follow up with further testing, also, getting a negative result can be more risky because there’s people who used this test and they had a negative result so they believe it’s all good only to find out later that it was incorrect. When you see the doctor they will most likely order a colonoscopy to further determine whether it is a positive result or not.
If know that colonoscopies are unpleasant, I recently had it done too but it’s the best way to get the right results and they can remove the polyps right away, I hope that helps you a little more, best wishes.