I've been having a dull pressure centered around the lower two left ribs for about 2 months. I'm 39 and have been smoking on and off for about 2 years. The pressure is more evident during the middle of the day and when walking. I went to my family doctor who felt is was muscles spasms and prescribed muscle relaxers; however, i'm ending the dossage and still feeling the discomfort. Has anyone experienced this type of symptom and was it associated with smoking/lung condition?