Actually, vaginal discharge and "odor" can change over the course of the menstrual cycle and it is quite possible to have some irritation/itchiness following shaving.
As for the odor, I would encourage you to check to see if it is present at the end of your day (which is likely and normal given the moisture and sweating around the area) or if it is present even following your personal hygiene (which is not normal).
Do you have itching, burning, swelling in the vulva that is present even before shaving? Do you have a large whitish "cottage cheese" type of vaginal discharge? At this point, these symptoms are indeed suggestive of a vaginal infection and treatment can be found with your pharmacist.
If the odor is characteristic of a "fishy" smell, at this point, only medication prescribed by a doctor/gynecologist will be effective.
Some women may indeed be at higher risk for recurrent infections. In general, I would advise you to wash every day, use a mild soap without fragrance, such as Dove without fragrance, wash only your vulva and not the inside of the vagina, use white cotton underwear, rinse well if you take a spa, avoid bath "bombs" or other scented products, and stay away from "douches vaginales" and vagisil products. If this persists, it would be good to consider seeing a gynecologist to offer advice.
For shaving, I would advise you to always change your razor blade approximately every 2 weeks, rinse it well with warm water and dry it before storing it, to avoid rust. I also suggest you shave in the shower to soften your hair and shave in the direction of the hair, while using a mild unscented soap, such as Dove without fragrance, to shave. Using depilatory foams can irritate and create a skin reaction, so I do not recommend them.
I hope I have answered your question.
Maeva Di-Re, Pharmacy Student
Supervised by Alexandre Chagnon, Pharmacist