Black spots due to hairs that don’t come out after laser hair removal, what do I do? (Photo)

I’m a 19 years girl who got laser hair removal, more precisely SWT technology, on my legs. I used to have a lot of thick black hair, and after this really painful treatment I started seeing some results. The point is that after my 3rd treatment I noticed that some of the hairs were “trapped” under the skin; obviously they aren’t ingrown hair, but more like BLACKHEADS that come out only if I press them. It’s really painful and frustrating... I’m attaching a photo of my leg below.