Itching that flares around your periods, with white discharge and a groin smell, points toward a fungal infection such as candidiasis, especially given your past fungal infection in the inner thighs. The smell could also mean a mild bacterial imbalance alongside it, and these two need different treatments.
Next Steps
A vaginal swab test will show exactly which infection you have, so please see a gynaecologist before starting any cream or tablet. Keep the area dry, wear breathable cotton underwear, and avoid scented soaps or douches.
Health Tips
Don't repeat your old fungal cream without a current test, since treating the wrong infection won't clear the itching or smell.