Uncertain with symptoms, dismissed by doctor

Hi. On Monday I had a headache and was feeling exhausted.
Someone talked to me that evening, and later that night she was informed that she needs to be in 14 days self quarantine as she was exposed to someone who is a housemate of a confirmed case (secondary contact). I was not aware of this until the next day (Tuesday).
That next day (Tuesday) I woke up feeling dizzy, having a headache and rapid pulse; and when I knew about my exposure to secondary contact, I decided to see a doctor. Doctor said my BP was my normal and since I’m not having any cough or fever, I should be ok, and sent me home with some ‘giddy’ medication.
Though I went to work on Wednesday, I woke up with runny nose and sneezing that persisted the whole day til I went to bed that night.
Thursday morning I woke up with a painful throat, stuffy nose and headache along with rapid pulse. I went to see the doctor again and she gave me medication for phlegm and said I’m ok to go to work as I do not have a fever.
Thursday night I could hardly sleep due to my stuffy nose, but also a chest pain on my left side.
I woke up today still unwell, coughing every now and then and still with stuffy nose. I still do not have a fever so my workplace allowed me in.

As I’m aware symptoms present differently in different patients, and that people take different amount of time to present with symptoms, I just feel the need to check if I am really free of Covid19 or if there’s still a risk. The symptoms I have been having seem more pronounced than any common cold I have had before, although it’s been awhile I caught one until this.