Are these stretch marks? 😳

I've been getting short, pink marks on my lower side/close to my butt, but the thing is its only on one side. Wouldn't they be on both?

They look like acne scars to me but I know for a fact they're not. And they're shorter than the marks underneath my breasts.

But with those, I can actually feel them when I run my fingers across them. I didn't know if you could actually FEEL stretch marks or not. These look like busted blood vessels or something.

In case it isn't obvious, I've always been a small girl with no weight problems, so I've never had stretch marks, hence, I don't know what different ways they come in. This is the most weight gain I've been through.

Anyway, I'd like to know, is it stretch marks on both my side and breasts?