144?
What unit is the meter measuring in? mmol/l or the americam mg/dl?
If using mmom/l, need to double check to see that is a decimal point between the two fours.. This would still be a high reading but did you wash your hands so you had no contaminates that could effect the actual reading?
if using mg/dl then 144 would be around 8mmol/l approx at the top range of normal control...
But the only person who can really tell you if you have or haven't got diabetes is your Doctor, I would make an appointment with them and discuss this with them, as it seems to be concerning so better to check and have your mind put at ease either way..