glass or ant bites

Hello, eight days ago i dropped a pyrex dish on the tile floor. i cleaned it very well. i have a 3 yr old grandaughter and a 15 month old grandson. today saturday i get a call from my daughter saying that the kids have "glass slivers" in their feet, the feet in areas are red, also painful. now, approximately 9 days ago i called my daughter at work and told her the playroom was full of ants, small ants. i even saw one on my grandson. now, checking the web i feel that if it were glass slivers from eight days ago would there no be a sign of any blood, with multiple sites on of red on her feet, only to come to be very  painful & red yesterday, or ant bites?  i checked the web, read my tabers book, all gear towards ant bites. please let me know what u think of this situation. PLEASE..marjorie

[margypops]

If they are fire ants they come up into a blister and are very painful, they last till the blisters burst, what do they look like?