Stool Formation. Can it be reversed?

11months ago i had very severe attack of constipation, bloating and stress. It tool almost 4-5 months to resolve. However digestion didnt go back to 100% normal. My stool is mostly flat especially around the time of my periods. I do have occasional bowel movement but majorly flat stool. It ranges from slightly flat to flat pellets. Nothing in blood test. No thyroid. Stool test all clean, no blood. Occasional feeling of not being able to clean the bowel fully. I do get nervous and anxious a lot. I also have PCOD too. Change in diet has helped but i feel i still cant go back to how it was before. I want a normal bowel movement just like before. What can be done about it ? Is it a functional issue? Can it be reversed ?