What is the reason for the distress and pain that afflicts a religiously committed girl, despite her recitation of the Quran, her remembrance of Allah, and her seeking closeness to Him through supererogatory acts of worship, and should she go to a doctor?

We ask Allah to grant you healing and well-being. Allah decrees various types of trials for the believer to raise their ranks, expiate their sins, and test their patience. Be patient with the pain that has afflicted you, and seek treatment by consulting trusted doctors. Strive in supplication, seeking forgiveness, and sincere repentance.