Sorry to hear about your acne flare.
If the acne is mild eg. just a few small red bumps, over the counter acne creams or benzoyl peroide may be able to control it.
If the acne bumps are large and painful, particulary if they are cystic, I would suggest seeing a dermatologist or doctor as it may require prescribed medication like topical antibiotic gels or even oral antibiotics or isotretinoin for control, as cysts in general respond less well to topical treatment alone.
Hope it gets better soon.