Personally, I think it is deficiency of both heart and spleen, and stagnation of liver qi aggravates the symptoms of deficiency of both heart and spleen. Poor liver qi leads to irritability, affects the spleen and stomach, and leads to fatigue, loss of appetite, fullness after eating less, abdominal distension after meals and other symptoms. If the mind can't become God, it will lead to insomnia and dreaminess. The general symptom should be insufficient internal yang, so you should also have gynecological symptoms, such as delayed menstruation and stagnation of liver qi, and you can't push menstrual blood down, so the menstrual flow is small. If there is cold in the uterus and the blood color is dark, there are blood clots, dysmenorrhea, abdominal distension or backache during menstruation, and the pain is the most serious on the first and second days of menstruation.
Looking back, oral ulcers may be caused by a cold or lack of sleep. You should ignore this symptom during treatment. When you have recovered from other aspects and have a good sleep, the oral ulcer will heal itself.
The above is just my humble opinion. Please consult Chinese medicine for face-to-face consultation.