What may cause someone to see an increase of floaters/spot things?

Floaters: Floaters are thickenings in the vitreous jelly inside the eye. They are common with age, myopia, inflammation, trauma, and other issues. They are benign and do not damage your vision. Rarely, they can cause retinal tears which may require laser treatment. Otherwise, no treatment is needed. In very rare cases, the floaters can become dense enough to block vision and may need surgical removal.

A retinal tear or RD: Is just one possibility. Get a dilated retinal exam and you will reduce the risk of developing a detachment of the retina. You are describing important warning signs of retinal detachment. An exam is the best way to reduce the chances of visual loss.

Floaters: It sounds as if you have had a posterior vitreous detachment. This is a situation where the vitreous(jelly) of the eye detaches (not a retinal detachment), it then "crumples" up leaving dots, spots, strands of blurry vitreous; i.e. The "floater". You should have an exam to ensure the incident did not tear the retina, which could lead to a retinal detachment.