R15,
you don't say how old you are, or what your ambition is, other than to fly professionally. Both would be useful in trying to answer your question.
There are many fields of professional aviation - military (with many different disciplines within that category); airline; commuter; airtaxi; flight instruction; crop-dusting; helicopter; and a good few others. In the USA, the military route is one of the best ways to get into aviation, but you need to be sure that you want to do that - as you can see every night right now on your TV, the military is no place for the squeamish! I believe the US forces allow a flying commission of somewhat less than the UK's 12 years, but you are required to have a degree, as in fact you are for most commercial airlines. You can, of course, do your degree within the military.
I suggest you visit a USAF, USN, Marine or Army recruiting office and see if you can visit an active military flying unit in your area. Ask questions and go see if what they do appeals to you. Do the same at the local flying club, or airline. Be diplomatic in your questioning - just now, people are very suspicious of unknowns asking too many questions!
Decide which area of flying appeals to you the most, then maybe we can give you some sensible advice how to get there.