Is Fishy Smelling Vaginal Discharge A Cause For Concern?

hello!im 49 years old and with four grown up kids...i was separated for 13 years but just recently about 2 years ago i hv a boyfrend and got active again in sex...i have noticed that there is a fishy smell in my discharge..mybe because i got conscious with my discharges unlike when i ws not active in sex before.i would just ask u if this is stil normal...i seldom have discharges but i only smell it everytime we have encounter.ling