Need help
Hello everyone I am 18 male from India and today is 4 july around 16 june in night my legs were paining like a hell i couldn't sleep whole night and had panic attack multiple time ane slept around 4 hours only lafter in morning I felt like shortness of breath and high pulse rate since then my symptoms developed into chest tightness, difficulty in breathing, pain in chest and yesterday I went to doctor she told to have some test chest x ray , cbc , ige , esr and all came normal so now my concern is is it asthama ? also whenever I am busy in clg i or whenever I am busy i doesn't feel anything the very next sec my mind switch to my breathing i feel difficulty in breathing and all this happening since last 14-15 days how to overcome form this how can I stop overthinking about this , just comes around randomly in my head plz help