I agree with Leesa.

It is more of an issue with patients who are very nearsighted, but it can happen with anyone. If there are tiny black dots numerous in the floaters, that signals a bleed sometimes. Elevated blood pressure for a significant period, may cause a bleed too.

A sudden floater issue may precede a retinal tear. Bleeding may signal diabetes or macular degeneration. Elevated homocysteine levels in the blood may inflame blood vessels causing tiny clots in the retina. (treatment with B12, folate, and B6 may help lower homocysteine levels).

I'd go to an ophthamologist MD eye specialist and get checked out, just to be sure.