Hi and welcome to HCM
Pregnant women undergo a significant hormone change in a relatively short time period. During all
pregnancy phases early pregnancy to childbirth, the changes brought forth affect
vaginal discharge, which can generate an odor.
Its true that vagina smells a peculiar odor, during pregnancy, but if its too fishy smell or is rather powerful that there might be trouble.
Watch out for these symptoms
Discharge that’s similar in texture to cottage cheese
Pain/discomfort during sexual activity or urinating
Yellow/green tint discharge
Discharge that smells like yeast
Bloody discharge (and you’re not having your period)
Itchiness/inflammation of vagina.
If any of the above with fishy smell discharge is there, then better to contact your obstetrician for diagnosis of possible vaginal infection
Regards
Dr Santosh