dark foggy edges tell me the film is fogged -- you didn't keep that particular roll out of the bright light and/or you didn't have it wound on the spool tight enough.

the milky issue is separate -- the black foggs along the edge are fog, keep the film in the shade/dark and keep it rolled tight, maybe even carry a black plastic bag to carry it in, or film tubes (make one by cutting the bottom off a plastic film can and taping it to the top of another.)