Aiyoh, 2 weeks of cough is quite long lah, especially if you've tried different medicines already, I think it's really best to see a doctor soon to make sure it's nothing serious or lingering, maybe kena check if it's viral or bacterial or something else lah. Sometimes persistent cough needs proper diagnosis to treat it properly, not just over-the-counter medicines. Do take care of yourself, and hopefully you'll get better soon once the doctor finds out what's actually going on!