An aggressive session of CO2 laser can indeed result in a few weeks of post-inflammatory erythema. I have not seen your "before" pictures and will not be able to comment on the cause of your red spots. I would advise you to go back to the doctor who treated you to discuss the current treatment options. You should be on post-treatment skincare regime to optimise healing.
Fractional CO2 is an ablative laser which is effective for acne scars but can be too aggressive for Asian skin leading to erythema and hyperpigmentation. If this indeed has happened to you, ask for other options for your acne scars. Fractional non-ablative lasers or microneedling RF options have a better safety profile.
PRP is still not approved in Singapore for skin and aesthetic use, hence most doctors here would have little experience with its protocols and its use.
Communicate with your doctor on the next step forward, all the best.
