Little tickle in my throat. the cold is gone so how do i get rid of the cough?

Time: A persistent cough after a cold can be do to several factors, post nasal drip , some patients with can have an asthma like problem ( post viral cough or cough variant asthma ) sometimes this will slowly resolve. Some patients respond to treatment of the underlying problem, for example in the some cases an inhaled steroid may help. A persistent cough needs a doctor visit to exclude other problems.

Nasal Irrigation: Nasal saline was using "sinus rinse" can be helpful.

Treatments....: Sometimes there is residual bronchospasm once a cold resolves. This can be treated with bronchodilator and steroid inhalers until the bronchospasm and airway inflammation is completely gone. You may also have residual post-nasal drip which can be treated with nasal sprays. So, see your doctor for diagnosis and treatment.