My cursor disappears on Yosemite. MacBook Air (mid2013)

Hi!

My cursor frequently disappears from screen when using my laptop. It´s a MacBook Air mid 2013 with Yosemite, no external pointing devices, just the trackpad.

It happens several times a day, it keeps working but I can not see where it is, so I have to blind click wherever to switch to another app and maybe let it appear again.

Anyone else having this issue? Is there a support phone or something I can call for this even not having applecare??

Thank you all!!!