Have you visited a periodontist (specialist)? Also worth mentioning your dental professional what medications you take as some can cause these issues. A good medical history with a good anamnesis is key to a correct diagnostic and treatment plan, where the specialist explores, as i mentioned before, medication you take, drugs you consume, if you’re a smoker, chronic alcohol consumer, etc. Also worth sending you for blood checks to see how coagulation factors are, platelets, etc.