I Have Recently Had Bronchitis, In The Last Three Weeks.

I have recently had bronchitis, in the last three weeks. a lot of coughing and was treated with Proventil Inhaler and a ZPack. I am going on my fourth week and although my coughing has improved, my whole body is weak, sore and very fatigued. In addition to this, I noticed bruising on my stomach just in the last 3 days?