Hi, i am freaking out. Some of my sons clothing have stains like these for around half a year, since starting solids… i was convinced they are resistent fruit stains (plums, pear, banana, etc), one of his pyjamas was very stained by it (he has breakfast in it and hates bibs). I kept using it, thinking it was just a visual thing, so just as pyjamas/home clothes. Now i freak out i could have not realized its mould 😯 anyone can advise?