Your symptoms sugge­st vitamin deficiencies. Lacking vitamin B12 cause­s tingling hands/feet, digestive­ issues, and headaches. De­ficient vitamin D prompts shaky sleep se­nsations. These deficie­ncies likely cause your symptoms. To fix this, e­at vitamin B12 and D-rich foods. Your doctor may also suggest supplements to re­store levels.

You are worried about your memory after bleeding within the brain. It is not uncommon for people to have these types of problems with their memories following such events. Some of the symptoms may involve having trouble remembering things that have occurred recently or forgetting appointments altogether; also clock watching could be difficult too. This can affect anyone at any age.

Many people­ feel sudden warmth, calle­d hot flashes. These happe­n frequently for women, but me­n can get them too. Hormonal changes or re­actions cause hot flashes. Stress, caffe­ine, or alcohol may trigger them. Staying cool, avoiding spicy foods, and re­laxing can help manage hot flashes. If the­y continues being problematic, spe­ak to your doctor.

The headaches have arisen regularly and are usually relieved by painkillers. They are characterized by stress, lack of sleep, or a bad posture, and therefore are often the case. It is necessary to trace the main cause. I suggest you engage in stress-relieving activities such as deep breathing, stretching, and getting proper sleep and posture. If the headaches still exist, it is crucial to consult a doctor to diagnose and prevent any hidden causes. 

Inner ear diseases, headaches and migraines, low blood pressure and some medications can cause dizziness or abnormal visual perceptions such as the illusion of movement. A neurologist should be consulted for the right diagnosis and treatment.

The blurry vision and the difficulty in focusing can be the vertigo that the ear fluid causes. It is common and it does not mean that you have a brain tumor. The ear fluid can mess up your balance and vision. Usually, it gets better on its own, but you might need medicine or special exercises if the problem keeps bothering you. 

Prolonged screen time can cause tiredness and it might be the reason for these feelings. It is necessary to rest a little from the mobile phone and make sure you are drinking enough water and eating properly to help your blood pressure. However, given that this has continued for a few days, I strongly advise you to visit a healthcare professional. They can suggest a personalized approach and check whether there are any hidden issues. Take care of yourself and request substantial medical advice.

The ailments you mentioned, such as pounding pain, sleepiness, and fatigue are normal for a concussion. Drink no alcohol and take it easy, but don't sleep now. See if you can manage to stay awake for a few hours and check your symptoms. Go to the doctor in case the symptoms become more serious.