You have had quite a lot of dust, batceria, fungal exposure to the lungs during the make-over so it is not unusual you are having these symptoms.
The chest pains could be secondary to coughing or a chest infection
(inflammation of the linings of the lungs) that would require antibiotics for 7-10 days.
If the pains persist with sweating, an ECG is a must to ensure all is ok with the heart side of things.
Antibiotics plus a course of antihistamines with inhalers or montelukast
It is more important that you get inhalers if you had asthma
in the past.
I would recommend getting all the above checked without further delay.