Retin A gel 0.1 is my first retinoids, what do I do? I have acne, acne scaring and large pores. (photos)

ordered retin a gel 0.1 (without seeing a dermatologist).have been using the retin a gel for 3 days and When I wash my face my face burns.i also have some new pimples, redness, peeling.Is this normal.How may times (and on what days ideally) should I use it.My retin a was expensive and I don't want to waste it by going to a lower dosage.Based on my pictures, how long Will I have use the retin a for my skin to be clear?Is my skin in danger of anything?Please help!!!!

No doctor answers yet