Since you were bitten again on April 20th while your primary vaccination course (started after the March 29th bite) was still ongoing, your body was already in the process of building an immune response. Completing your 4th dose on April 26th as scheduled effectively covers both exposures. You are clinically safe, and there is no requirement to restart the course or take additional doses for the second bite
Next Steps
Course Completion: You mentioned taking 4 doses. If your doctor originally prescribed a 5-dose schedule (Day 0, 3, 7, 14, 28), make sure to take the final 5th dose on the scheduled date in May. If it was a 4-dose (ID) schedule, you are already done.
Wound Observation: Ensure the wound from the April 20th bite was washed thoroughly with soap and water for 15 minutes. If there is any pus, increasing redness, or persistent pain, consult for local wound management.
Anxiety Management: You are medically protected. There is no documented case of vaccine failure when the schedule is followed this closely. You can relax and resume your normal activities.
Health Tips
For a detailed discussion on the difference between 4-dose and 5-dose schedules, or to review your wound healing progress, you can consult me directly through my profile.