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You might be having eczema or fungal infection
over the nipples. I will recommend you to see a dermatologist
to confirm the diagnosis and start appropriate treatment. You may continue applying coconut oil.
If it is eczema you will need a topical steroid
cream and if it is ring worm you will need an anti fungal cream.
Regarding floaters, it can be a sign of retinal detachment
, but in 98 percent of the cases it is just an age related change. If it is causing trouble please consult an ophthalmologist for the same.
Hope this helped