Irregular bleeding during the first few months of using a contraceptive method, such as the Evra patch, can be normal. It is recommended to continue the treatment as prescribed, as the bleeding should eventually stabilize over time. However, if the symptoms persist for about four months, it is advisable to consult a doctor for a more thorough medical evaluation to rule out any other potential causes of bleeding. If needed, a different contraceptive method may be considered. Consulting a pharmacist for a prescription for a different method may also be helpful. It is important to consider if the patches were taken properly and if there are any symptoms of pregnancy, in which case a pregnancy test may be necessary.