This is unlikey that you inhale a pill, specially when you say its a big size. You feel chocked with slightest touch of it to the respiratory tube. Coughing is a result of that. With the next attempt it usually goes to the stomach. At time you continue to have that choking
sensation, which doesnt mean that you inhaled it.
for inhaling it would be generaly intolerable, so its unlikely. Start with a paracetamol-diclofenac
combination. Check the response for two days and get a chest x-ray done to alleviate your anxiety