read it its too long... I donno wut i see myself....
As a nonchalant reminder: the rules are your scarecrows. If not observed, pretty sparrows like me will fly down and peck you with our beaks
They're not very difficult, as long as you intend to follow them. ^^
To the original topic:
Firstly, perform istikhara as you have intended. Never think we can give you better advice or decide something as wisely as Allah can. Not even close.
If you perform istikhara with the intention that you
trust Allah and whatever decision He'll make for you would be the best, you will get your answer and your path will change accordingly.
Now my opinion: if you're an excellent student who's always ranked on the upper slot of the class and you want to achieve excellence and not just 'good' grades, then you can take up five subjects (Biology, Chemistry, Physics, Mathematics and AICT). I did the same (though my fifth subject wasn't nearly as difficult) and it seemed to be a GREAT idea because I started AS sure that I'd be an Engineer, halfway through AS I wanted to be a doctor, at the end of AS I wanted to be a Biologist
So from my experience, keep your fields open. A-Levels is FAR more in-depth than IGCSEs, you will learn a lot about your aptitude and interest during those two years.
Just so you know, minus Chemical Engineering, Engineering is almost nothing but Physics. On the contrary, here is a significant involvement of Chemistry in Medicine, however, as Biochemistry, Pharmaceutical, Forensics and whatnot.
If you're not a nerc or if you don't want to go through this hassle, take a couple of aptitude tests. I'm linking some, but you can always look up 'career quiz' or 'aptitude tests' on Google.
http://www.careerpath.com/career-tests/career-quiz/http://www.schoolfinder.com/careers/3step1.asphttp://www.princetonreview.com/careers-after-college.aspxAt the end, the decision lies in your hands. You should pick the career path you think you can be most loyal to; if you intend to apply your education for the rest of your life, you will be spending from 1/3 of your day-to-day life to 1/2 of it in that profession. It will
consume you, so you need to pick something you like, you're good at and you see yourself being happy in. You might have to compromise a few sleeping habits or study a bit harder, but if in the end you're happy with yourself, the challenges were worth it. Life doesn't revolve around medicine or engineering--pursue the field you can be the best addition to.
You asked some questions, however, and here are the answers:
Which job is better??
Subject to perception. If you enjoy helping people or are considerably social, then you'd enjoy medicine; if you prefer working with machines, you'd quote engineering as better. There is no
scale to decide which is better.
Which one has a higher prestige??
Doctors obviously are viewed as angels, especially in Third World countries. Though with great power comes great responsibility and if you wish to honor the emotions of other people, you have to be very careful about your job ethics.
Maybe which job has more likely to have a higher salary??
Very subjective. Doctors and engineers employed in the government sector have poor salaries; whereas in the private sector the salaries vary drastically from specialist to specialist.
Which field has an unlimited credit??
Both, really. If I understand what you're saying.