Male Baldness Info

i am not too sure why i am still experiencing chest pains, I had history of chest pains before and i ended up in the ER a few months ago ’cause i thought i was having a heart attack due to my chest pains. However, after having a chest x-ray, EKG and blood tests, the doctors told me that i was just having anxiety. It is true that my life has been very stressful since the death of my father 2 years ago, and my doctor prescribed me paxil for my stress, but i only took it for 3 days because i couldn’t handle the severe side effects of it. Also, i think i have learned how to control my stress without any medications. Also, i have been taking Rogaine for my male pattern baldness which my other doctor prescribed to me almost a year ago; however, i have decided to temporary stop the medication (rogaine) 4 days ago since i noticed that it is the one that’s giving me the chest pains, and also because one of the side effects of it is chest pains. My question is why am i still getting this random chest pains?? it feels like something is poking and/or grabbing my chest (most of the time the left side that hurts). I am only 21 years old so i am not too sure what’s the matter of me. I don’t smoke nor drink alcohols. Oh yeah, i am currently seeing a counselor for my stress.
i need a serious answers, so please help. thank you for your time.

Problem number 1: A certain metal is 20% tin. How many kilograms of this metal must be mixed with 80 kg of a metal that is 70% tin to get a metal that is 50%?
Problem number 2:Peter have some P5.00 coins and some P20.00 bills.He has 5 more twenties that fives. The total value of the money is P725.00. Find the number of P5.00 coins that he has.
Problem number 3: Minodixil is a drug that has recently proven to be effective in treating male pattern baldness. A pharmacist wishes to mix solution that is 2% minodixil. She has on hand 50ml Of 1% solution and she wishes to add some 4% solution to it to obtain the desired 2% solution. How much 4% solution should be added?
.I’m waiting,,,,,please,,,tnx