What Causes Severe Chest Pain In Adults?

Question : Hi there, I am 41yo female. Non smoker fit and healthy weight. Twice this week I have been awoken in the early hours of the morning with almost unbearable chest pain. On the first occasion I lay really still trying not to move and after 10 mins of it coming and going in waves I took 2 codalgin forte and was able to get back to sleep. My normal BP is approx 130 on 78 with pulse normally around 70. I took it during this attack and it was 148/96 pulse 82. Over an hour BP dropped to 147/81.
At 3am this morning I awoke with the same symptoms and BP 150/89 pulse 78. I had some 5mg OxyContin left over from an operation last year so took 1 of those and the pain is now subsiding with BP now 139/87 pulse 72.
I have had Hypothyroidism for approx 5 years and take oroxine every day. I had blood test recently and dr said everything was fine accept cholesterol was creeping up and I think was 5.9 (no medication suggested dr said its hereditary as I have an excellent diet). I have a hectic job but I don't find it to stressful aside from odd situational occasions. I do suffer from extreme fatigue which he says could be due to my work and my type A personality and I am a single mum and I own and operate 3 realtor offices and manage 18 staff. My Dr allows me to take a Duromine tablet every now and again when I need to work a 20 hour day (30mg phentermine) I would take no more than 60 tablets a year with a dose of 1 tablet in the morning if expecting a very long day and have never experienced any side effects aside from staying awake.
My mum is a fit and healthy non smoker but is on cholesterol medication and my dad has had 3 heart attacks and 2 strokes but was a very heavy smoker.
The only other health issue I have is recurrent and chronic yeast infection which I am trying to treat by reducing sugar and carbs in my diet.
Could you advise what I should do regarding the chest pain?

Thank you