Is my achilles tendonitis back?

I had tendonities back in January and I have let it rest since Feb and stuck with stairmasters and ellipticals. I haven't even been running much but I have a slight weird feeling in the back of my tendon/heel area sometimes. I notice a very minor pain when I do movements that require me to bend over forwards like tying my shoes or picking something up. Is this a symptom of tendonitis or something else? Thanks!