hello,I have got your question. I will suggest you for immediate check up with your doctor or a cardiologist.You have said about your increased body weight and not getting normal sleep at night along with chest pain
.So, there is a concern about hypertension
and obstructive sleep apnoea
which may be associated with obese
person.Moreover the chest pain may have a cardiac origin.So at first you consult with your doctor.Don't neglect this.Wish you a good health.thank you.