My sensor constantly has smudges, even after I clean it. Every time I go to swap out my lenses, I see a new smudge on my sensor. So I clean it using a sensor swab. Comes out looking perfect. A couple of days later I see another smudge. At first I thought I was using too much sensor cleaning solution and it was drying up. As of recently, I have been using dry swabs and the smudges still keep coming back. It's seriously pissing me off now. Never had this problem before I bought sensor cleaning kit. Is my sensor cleaning solution just fucked up?

Does anyone know what is happening? Above I linked what my sensor looks like as of today. I am worried it could be effecting my image quality considering I often shoot using narrow apertures. Any help is appreciated.