Please stop taking Crocin and Magadol together immediately. Both contain paracetamol; combining them risks accidental overdose and liver toxicity. Since your dengue test is negative, you can safely take Ibuprofen (400mg) after food for fast pain relief, provided you have no history of stomach ulcers or kidney issues. For quick non-medicinal relief, drink plenty of water, try a cup of coffee (caffeine boosts pain relief), and rest in a dark, quiet room. If the headache is throbbing or persists, it may be a migraine requiring prescription-strength medicine. Please consult a doctor if pain continues.