Addiction of sleeping pills. A headache.

Looks like you have been taking pills without any doctor's prescription. It is really harmful to have sleeping pills. Most sleeping pills are classified as "sedative hypnotics." That's a specific class of drugs used to induce and/or maintain sleep. . While these drugs may be useful short-term, all benzodiazepines are potentially addictive and can cause problems with memory and attention. They are usually not recommended for long-term treatment of sleeping problems. Without the sleeping pill, you might find it difficult to sleep. If that happens, it could be a sign of a physical or emotional dependence or both. Consult a doctor and get diagnosed for proper guidance. Meanwhile get into good lifestyle,  drink plenty of water,  eat healthy food and cultivate habit of exercising  (maybe jogging,  hitting a gym etc)