Hello everybody! I am a 28 year old and thinking about applying to medical school. I wanted to become a doctor in highschool but I did not do as well as I hope in undergrad and thought that I should become more realistic and settle as a medical technologist. But after working for 4 years, I know that med tech isn't what I to do for the rest of my life and re-living my dream to become a doctor again.
Some background about me before I jump into some questions for you:
As you can see, my resume isn't very impressive. I am trying to boost it up by volunteering at a local children's hospital.
Questions that I have:

Some background about me before I jump into some questions for you:
- Graduated in 2012 as a premed student.
- Cum uGPA: 3.11
- Been working as a medical technologist for about 4 years.
- I got Cs in Biochem and Ochem 2. Bs in A&P 1+2 and Ochem 1. Got As in all the clinical classes for my med tech program.
- I am hoping to get into a med school within 2-3 years
As you can see, my resume isn't very impressive. I am trying to boost it up by volunteering at a local children's hospital.
Questions that I have:
- I thought about retaking some classes such as biochem and ochem again. Do you think that is necessary?
- I have been out of school for a while so I am terrify of the MCAT because I have forgotten most of the knowledge I need after graduation. Do you think taking one Princeton course for MCAT would be enough?
- What are other extra curriculums I could do to make my resume more impressive?