My chest feels tight and hurts when laughing or talking . has been like this for a whole day. should i be concerned?

Chest wall : Dysfunction. Search health tap for slipping rib syndrome. Find a good osteopathic physicians for physical exam and treatment. It can also be something else, it's hard to say.

Yes, you should: Get yourself checked out for lung infection , pneumonia , bronchitis , asthma etc , unless stress anxiety has triggered those symptoms. Talk to your physician if it is also a possible side effect from medicines you are taking.