Duo test needs to be taken from 21-28 days from date of exposure . Since in your case you had unprotected sex i suggest you to take hiv antibody test at the mark of three months for conclusive results....
Yes , There is no specific symptoms for HIV.
Do you think the weird Feeling in the chest is a symptom or should i look for other medical solutions for that ? after getting tested.
Get tested with 4th gen DUO test after 28 days of your exposure.