If it's just on one side of the face, it is more likely to be irritation rather than acne or rosacea or some other medical condition. That sort of thing is not from bacteria. I'm not sure why shaving is so irritating to you, but you might try an electric razor. I also suggest a skin doctor visit, because there may be some medical assistance that might help as well (an oral or topical antibiotic.) If yu ever pick or squeeze the lesions, please don't....
Best.
Dr. Rockoff