Welcome to HCM
Of course you should . Skin lightening creams typically create this problem, its high time people understand this and stop harming there skin.
The darkening will fade once you stop. Gentle scrubbing ( once a week) and keeping the skin hydrated & moisturized will help.
If the discoloration doesnt go ways, you may resort to visiting a cosmetologist for microdermabrasion
or a homeopath
Thanks & Regards
Dr.Anshita Singh Rathore