Thank you for your question.I am Dr. SH and will be helping you out with your concerns today.I am sorry to hear about your problem.
According to recent guidelines the normal problem pressure for your age if you do not have heart disease or diabetes would be around 150-90 (upper limit).
Readings of 123/68 and 138/82 are perfectly normal.
For the chest pain, I would recommend that you should have a stress echo or a treadmill test, if you have not had those done.
So I would not worry.
You can wait for your GP to be seen at two weeks' time.
Let me know if you have more questions.Please do submit a rating when you are done.Kindest regards