I would be more concerned with the 105 than the 144. The systolic pressure (first number) will fluctuate, as stated in an earlier answer, to compensate for a wide variety of reasons. This is normal as long as it returns to your norm once the "stressor" (be it physical or psychological), has resolved. However, the diastolic pressure (the second number), although it will also rise and fall to some degree with the systolic, should not fluctuate as much and should never be over 100. Also note that the two numbers are closer together in the second reading then the normal reading. This is called narrowing pulse pressure and, when seen in a trended situation, is not healthy. However, I would also agree with earlier comments that one reading does not constitute a trend. I do feel that the 105 part of a reading of 144/105 would probably warrant at least a phone call to my primary care provider.
This is definitely something I would get checked especially if it turns out to be a trend. Several things can contribute to a one-time spike in blood pressure including stress, foods, exercise, etc. If it doesn't regulate back to normal or if it causes other symptoms (i.e. headache, blurred vision, dizziness, or nausea) you should definitely see your primary care physician or even visit an urgent care.
One reading isn't particularly accurate. You should probably check your blood pressure every few days for a week or two (write down date, time, and reading). If it is continuously high, then you should probably have it checked by a doctor ... and if you do get it checked in a doctor's office, it is a good idea to take your written findings with you.