Get tested to know your status. The vast majority of specialists consider 4 weeks DUO/ COMBO test conclusive and 8 weeks 3rd generation test conclusive. But we also follow cdc guidelines to peace your mind...
HIV symptoms are not common to start in a few days.
14 days is an accurate time line.
Remember HIV symptoms can mirror other things.
Assuming the guy has hiv and a readable viral load then yes, you had a risk for hiv.
Testing is the only way to know. At 28 days post sexual encounter have a 4th generation test done.
Also called a DUO, AB/AG.
Until then try and relax best you can, anxiety can create health issues.