Is this edging? Or bad or something?

Nah, it's natural. Relax, you're cool.

 

Did you edged or relapsed? If not then no worries.

 

I think you've done well mate, if you edged then its okay as long as you dont actually relapse.

If it helps i'm currently on my 18th day and what you describe happens every now and again.
keep with the positive mind set and walk away like you did. Or go do something proactive like go for a walk/ doexercise or just get out of the house to avoid temptation

 

Edging is considered as a "relapse".

In fact, edging is worse than just a quick 5 min PMO session in my opinion

 

oh thats my bad

 

I don't want to hijack this thread with a debate, I'd just like to point out that edging is masturbation, even if you don't 'finish.'
To answer the OP, if you didn't know, or reasonably suspect, that drying yourself off would cause arousal, then there's no problem. The problem comes when you willingly take part in a lustful act.