PCOS & Conceiving

I’ve had regular periods all my life. I got pregnant w/ my first baby a month & a half of trying. I’ve Had regular periods up until I started trying to Baby #2 in June. In June my period has gotten irregular. I would have a regular 28 day cycle then the next cycle would be between 32-45 days. I went to see my doctor & got an ultrasound of my ovaries & was diagnosed with PCOS. Is it possible you Can you develop PCOS later on in life?