I suddenly got blemishes.

I was shocked when I looked in the mirror today... It's usually fine, but suddenly blemishes have appeared noticeably, and I'm so upset. I haven't changed my skincare products, so I wonder if it's due to fine dust or hormones? I don't know the cause and feel at a loss. If I could, I'd run to a dermatologist right now and get a laser treatment, but my skin is quite sensitive, so I'm scared it might irritate it. For now, I'm trying to use the mildest products possible to minimize irritation. I really don't want to look in the mirror anymore. I wish money to go to the dermatologist would just fall from the sky.