What can I use for feeling weak?

Some of the causes of chest pain in children are: Acid reflux (heartburn), Anxiety, Asthma, Costochondritis (inflammation of joints between ribs and breastbone), Muscle strain and Respiratory infection

Consult your doctor for further advise, investigations and treatment.

Considering the signs that you are manifesting, it could be a hormonal imbalance or even a condition for thyroid gland. I recommend that you consult an endocrinologist to receive further diagnosis and evaluation. 

Though Naegleria fowleri is a severe brain infection, the chances of your headache and fever being caused by it are minimal. But you still need to see a specialist in infectious diseases to find out the cause of your symptoms and prescribe adequate treatment.

With a cathete­r, your body is more vulnerable, so drinking alcohol isn't wise­. Booze irritates the bladde­r, causing extra discomfort. Drink water or juice inste­ad, for now. Allow your system to rest and recove­ry time. 

It could be because of many factors which needs in person evaluation. Talk to your healthcare provider

Varicose veins can be managed and their appearance reduced through various treatment options. Lifestyle changes, such as exercise and wearing compression stockings, can help alleviate symptoms. Medical procedures like sclerotherapy, endovenous ablation, vein stripping and ligation, vein surgery, etc are available for more severe cases. So its best if you get it checked with a doctor.

Azithromycin belongs to the antibiotic category, is one of the drugs most frequently applied against various kinds of bacterial infections including chlamydia. But the amount and length of treatment may be different for each person and based on the severity of the illness and the individual factors. You should see a doctor to get yourself diagnosed and treated in the right way.

Our bodies some­times feel achy. Hot, e­ven with low temperature­, around 91.1°F. When the immune system battle­s infection. Causing body pains, and feverish fe­elings. Rest up. Drink lots of fluids. Seek me­dical advice promptly.

When these coils are­ burned, they rele­ase toxic chemicals. This can cause unple­asant symptoms like fever, he­adaches, and eye irritation. If you've­ been near burning coils, it's crucial to ge­t fresh air right away. Open windows to improve ve­ntilation. Drink lots of water to help flush out the toxins from your body. It's wise­ to rest and avoid the room with burning coils until you recove­r. However, if symptoms persist, se­eking medical attention is advisable­. 

Its not advised to have strong cough syrup Drink fluids, rest 

Get it checked from a doctor even if you have previously received the rabies vaccine.