You're not in a very good position. You haven't even begun to demonstrate that you can get straight As in the sciences and I think that's what you need to do. You have a lot of GPA redemption to accomplish if you want to succeed. It will take dedication, time, and money to fix the situation, but if you are resolved to be a physician, then it can be done.
Here are two possible pathways to your goal:
1. You could do some post-bac work first, to get your cGPA high enough to qualify to get into an SMP. Even with an MCAT score of 43, without a recent proven track record of excellent grades in upper-level science classes, no med school will take a chance on you. High performance in the SMP could get you into an allopathic med school.
2. Plan to apply to DO med schools. Repeat the classes where you did the worst and use AACOMAS policy that includes only the most recent retake when calculating the application GPA. If you have a bunch of Ds and Fs, this is the fastest way to fix your low GPA if you can get As the second time (note: the repeated class must have the same number or greater in credit hours). Get straight As in the rest of your prerequisites due to your new work ethic. Get a good MCAT score to prove you understood the material. Shadow a DO and get a letter of recommendation.
Be aware that there are a few DO schools that consider applicants with a GPA of 2.75 or lower, BTW, if the MCAT score is really strong and there is a recent steep upward grade trend. Educate yourself on this option in SDN's PreMed Osteopathic Forum.