I am going to be honest here. Don't assume that you're back to normal.
Depo is exogenous progesterone, meaning hormone not made by your body. Your endogenous progesterone, your body's own, can remain affected for depo even in minute quantities.
With that said, I had my last shot 10/12 after being on it for 2.5 years straight. In December, when it should be expiring, I investigated with dong quai and vitex. I had a period 6 weeks after my shot "expired." After that I have been 30-35 days varing with abnormal uterine bleeding inbetween. Which is still withdrawal bleeding from the exogenous progesterone despite by body trying to regulate it's own.
The obgyn I was at before, threw a generic clomid/estrogren/progesterone (really that was the last thing I needed, but listened). and I did it twice and it was hell.
Then in May, I decided to switch docs. My new doc looked at my calendars and said that he feels I am just now regulating enough to give conception a real chance.
I'll cut to the chase, I had a BFP and M/c all this week. I'm not saying that the depo or the residual affects of it lead to that but I caused myself a lot of unnecessary worrying, stress, strain on my husband and happiness TTC before I had a pattern of cycles to reflect on.
Now that I have experienced a 6 week M/c, I feel more protective of the ladies on here TTC. I don't want you to drive yourself nuts coming off depo.
If you haven't started charting please do. I highly suggest Fertility Friend website/app and taking charge of your fertility. Get familiar with your basal body temp, start checking your cervix, learn its positioning and your CM patterns. Like clockwork I started to realize I was ovulating around CD 17-18, my CM started early. It took me a few months to learn my cervix's changes. But mine are pretty reliable and correlate to my other signs of ovulation. I also noticed I get migraines at the end of my period and around ovulation. My breasts are always sore right after ovulation and not before. I didn't have these clockwork things right off depo, but soon the pattern developed.
Learning these things will empower you to see that the depo is really out of your system and you're becoming regular. If you start charting all those things and its haywire and nuts looking with no pattern, then you know all you can do is BD and cross your fingers. Since depo is progesterone, which is the heat hormone, doing the BBT really is necessary to see what your body is up to. If you don't see a clear rise then you're probably having annovulatory withdrawal bleeding. You will feel so womanly and empowered when you chart! I just hate to see another hopeful TTCer post depo go nuts like I did.