pursue a second undergrad degree to pull up the GPA...

i just finished my degree in computer engineering and only got a CGPA of 3.3 (75-79%). i did pretty well in the first year but then depression hit really bad and my marks dropped. i have no volunteering experience and haven't taken all the pre med courses, but i am considering seriously of going into the MD/PhD program.

i am thinking of spending 2 years to pursue a second undergrad degree to take the required premed courses, to pull up the GPA, to get some volunteering experience, and also to prepare for MCAT.

on the other hand, some of my friends suggested me to go for a masters' degree in biomedical engineering or life sciences instead.

i am not sure if doing an extra degree would help to increase my chances of being accepted. i've had 4.5 years of undergrad study already (138 credits, with a minor). even if i go for a second degree (60 credits) and manage to do very well, i am afraid my GPA will still not be competitive enough.

i am wondering if it is worth it to go for the second undergrad degree. i am also thinking of an alternative - to apply for a less reputable med school overseas, but that would be difficult to practice in canada i guess...

also, will i be in a better position if i pursue a master's degree instead?

any advice/suggestions will be greatly appreciated