Weird smells after Depo shot?

I had a heavy flow prior to the shot, and now I’ve been period free since July 2017, and it’s incredible freeing feeling if I do say so myself. I’m a hard worker and my cycle would often become a huge distraction for me and I would have symptoms of Endometriosis without ever being officially diagnosed, before this shot. So I’m thankful and appreciative first and foremost that I can still have the opportunity to have it every 3 months. Remember that it is not recommended for a woman to be on this shot in their 30s, let alone, especially if you’re ever going to want children. I have one child and I’m one and done so this is better then removing my organs just to be free of a difficult cycle.
Anyway, I have been experiencing some vaginal odor recently, with my long term partner. I cannot seem to get a positive test result for vaginitis or BV, either. My theory is that, (TMI FYI), our chemistry and mixture of sexual juices seems to make me have the worse odor I’ve ever experienced. I will say that sometimes it is OK and “normal”, in terms of a regular smell, but there’s something about being on this shot, that is causing me to have foul odor after sex. Of course I wash, exterior, but I find the need to have to do it multiple times a day. It’s rather disturbing my schedule and, makes me embarrassed because my partner notices the smell as well. It’s a turn off. I have to douche 3x a month, even though the sound of that makes my Ob cringe because it takes away the “healthy and good” bacteria from the vagina, but it replaces it with a normal smelling vagina, instead of putrid and ridiculous. My personal hygiene is great, however, the smell makes it seem like I don’t take care of myself properly and that’s what is irritating. I don’t have discharge with the smell, either. Other then just your basic secretions of a vagina.
The dark discharge you’re getting is called breakthrough bleeding and it is basically normal because whenever your uterus contracts, it will constrict, and automatically “flush” any old blood lining from your uterus. It’s a natural process that happens because you are not pregnant, but remember the shot basically makes your body think that you are, and since you do not have a mucus plug (that only happens with pregnancy), you’ll see the different colors of discharge. It’s nothing to be alarmed, and will happen with just about any birth control. The depo also prevents you from ovulating, and releasing and egg. But if you are less then two months on this, up to a year, your body is adjusting to not ovulating.