Any negative test is good.
Take a DUO test at 28 days.
Can I take another rapid-test in 3 weeks?
I dont know if I have money for a DUO test/i dont know where to get one
Does it also seem like i'm at risk?
Yes, you had a risk from unprotected sex.
If can't take a DUO, then repeat that test around 6-8 weeks, then again at 3 months.
By take a test do you mean a HIV rapid test?