Hello mam,
It seems like it is due to the vitreous gel in your eye...(floaters)
But if they are contact not increasing then you dont have to worry about..
But if they are increasing with drop in vision then you have to consult a doctor and get your retina evaluated.
Next Steps
Get yourself checked with ophthalmologist mostly you will find nothing but it will give you ease of mind.
Health Tips
Contact doctor immediately if floaters increases or vision drops