"I have been feeling a little light headed sometimes,"
Couple that to a BP readings of what you have described, then if, if , you are taking tablets to lower your BP e.g Enalapril, then that may well be the cause of your problems.
BP of 110/60 "could" be normal, if you were symptom free, BUT...BP of 110/60 with light headedness is suspicious of drug overdosage.
HOWEVER...you have a chest infection, COPD and I bet you are a bit short of breath eh?.....more recently? In this situation you oxygen levels in your blood may well be low and this would cause you symptoms of low blood pressure and light headedness.
My money goes on the latter.