dear sis/bro, aslam alaikum
There is medication available for your symptoms which you can buy over the counter without seeing a doctor. But you also need to cut down on stress and the following recommendations are highly beneficial for good physical, mental and spritual health inshaAllah.
The Quran is also joyous source for healing the mind, body and spirit.
Allah swt says: "And We sent down in the Quran that which is healing and a mercy to those who believe: to the unjust it causes nothing but loss after loss". (Quran 17:82).
Recitation of the Quran has a healing effect on the body. These effects are due to the effect of sound (echo) and the meaning. The letter Alif resounds unto the echoes to heart and the letter YA resounds unto echoes to the pineal gland in the brain.
Wudhu is a great way to prevent illnesses. Washing all the exposed parts of the body: hands, feet, face, mouth, nostrils etc. 5 times a day is a healthy preventive procedure. Miswak (brushing teeth) is beneficial for the mind and body - not only for oral hygiene.
Salah performed properly is gentle yet beneficial for all the joints and muscles in the body. The Prophet (PBUH) advised muslims to teach their children swimming, archery and horse riding. The emphasis is on exercising to maintain good physical health.
Good nutrition is important. Eat healthily. Certain types of food i.e. fruits are especially emphasized in Quran (36:57, 43:73, 16:67)
"And from the fruits of date palm and grapes you get wholesome drink and nutrition: Behold in this is a sign for those who are wise" (Quran 16:67).
The prophet told us that in black seed is the cure for all diseases except death. Consume food according the Prophet's sunnah, i.e. the Prophet ate using three fingers (right hand). Eat slowly and eat just enough. keep one third of your stomach for food, one third for air and one third for water. Always start eating with 'Bismillah..'
Avoid stressful sitautions, even if it means saying 'No'. Take rest when feeling rundown and avoid all that's forbidden for it weakens one mentally & spiritually, hence affecting the physical health.
Ask Allah swt to heal you:
"And if God touches thee with affliction, none can remove it but He: if He touches thee with happiness He has power over all things." (Quran 6:17).
InshaAllah, keeping with recommendations of the Quran and sunnah will be the most effective way of improving and maintaining good health inshaAllah.
May Allah grant you shifa. Ameen.