Ladies I need some opinions please. Olivia has had a swealling on n off on her left eye since Feb.…

Ladies I need some opinions please. Olivia has had a swealling on n off on her left eye since Feb. Theres no discharge n it doesnt bother her at all. Been to the docs several times but they dont seem to know what it is or what causes it. It comes n goes so I cant pin point what it could b that causes it. It does seem to be worse if she cries. Could it just be her tear ducts? 😓