Is it normal that discharge or spottings during pregnancy has a foul smell?

Sounds like BV: This sounds more like bacterial vaginosis. This is an overgrowth of normal vaginal bacterial and leads to an odor. It is treatable with antibiotics. Schedule a visit for confirmation, testing and treatment.

It's not normal: But not unusual. A fishy type odor is likely bacterial vaginosis. It's treatable with an antibiotic called flagyl.