Can only taking Flagyl get rid of BV?

I went 2 the doctor because of an odor I never really had. I was diagnosed with Bacterial vaginosis which the doctor said was common. The 1st doctor I went 2 was dumb and said I didnt have anything. But anyways, I took Flagyl for 5 days. Dont you also have to take a cream to instert or will Flagyl work? I really didnt have any other symptoms. Can you take the antibiotic while on your menstraul or it really doesnt matter when you digest it? I completed it and just finished my menstraul. I dont have that smell anymore but I noticed its not the same smell as the other days. This only happens 2 days when I am done with my period. All other days its fine. I thought taking the medication would completely have everything back to normal. Does that mean I still have it? She told me my husband does not need to take anything. I though we can pass it back and forth but she said just for me to take it orally for 5 days. I only started noticing issues after marriage. is this normal after you get married? Do you have to douche everytime after sex? I heard that is bad especially if you are trying to get pregnant. I try to ask these to the doctor but the appointment is not untill 2 weeks. Sorry for the graphic info but im human. lol