Would you consider it slowing myself down if I started with pre calculus? Is pre calculus harder than calculus 1. Also, If I'm also going to consider medical school it's safe to take calculus 1 right. I just don't want my GPA to get messed up from calculus. Advice please.
I don't think you would be slowing yourself down at all if you were to take pre-calc first, but I think you should only do it if you feel you aren't particularly good at math. If you already took it in hs/have a good grasp of pre-calc, then I think you would be wasting your time if you didn't start off at calculus I. Also, decide early on whether you want to take calc or algebra based physics. At my school calc II is a co-requirement for calc based physics I, but not for the algebra based one. If you are going to take the latter, I would recommend taking it either before or while you take calc II (if you plan to). I had no physics background prior to taking calculus and once we got to the physical applications section, I was completely lost.
One more thing: it's not a bad idea to read your science textbooks either

. It helped me in the long run, but I don't know how you study/learn so it might not be as helpful to you.