Even if he was HIV positive, the risk for the insertive partner for a single exposure is neglible.
Wait until 3 months post-exposure for a conclusive, if negative, result.
next week makes 3 weeks....is that okay?
for starters...most ppl dont "lie" about their status when asked.
10 seconds is a MINIMAL amount of time and most likely wouldnt result in infection...but...the only way to be 100% sure of your status is by testing.