Should i drop Additional Mathematics?

[.rh0na.<3]

I'm in the state of thinking right now whether to drop my A*Maths or not.
Ive been struggling with most of my AMaths work
& im in Form 5 now. (Which is equivalent to Grade 11).
And im having my GCSE O'levels this year.

Im planning to take a medicine course in the future.
(pediatrics/pediatrician)
I was wondering if Add Maths is important in that course?
And that, i wont regret dropping it..

Our registration for the O'levels is due tomorrow.
And im very worried & i feel like crying because i cant decide whether to drop it or not. (im a very indecisive person =/ )

Because if i dont drop it, i might risk getting a "D" or an "E" grade, which is not really nice because im taking 9 subjects.
If i do drop it, i'd be able to concentrate on the other 8 subjects.
(I took Biology, Chemistry, Physics, Computer Studies, English Literature, English, Mathematics 'D' & Bahasa Melayu)
I have no problem with those 8 subjects.
AMaths is the only subject im struggling in.. :S
Plus along the way, i might be just concentrating on improving my AMaths & i might not be able to focus on my other subjects. *sighs*

Some of my friends & teachers said that it would be a waste to drop it since i've been studying it for a while now.
So my efforts so far would just be gone to waste or something =S.
I know it's all up to me.
But somehow i dont want to drop it.
I fear i might regret it in the future.
My parents said that it's my decision.
If i think i can do it, then dont drop.
If i cant cope up with it anymore, so just drop. .

So should i or should i not drop it?

Please help me out. =S
Thank you<3