Hi @bris04 It’s a real panicky feeling when you think you may be pregnant even while using protection. Happened to me too, many years ago. Depo-provera is given every 3 months and as long as you stay on that schedule it appears to have a good track record in preventing pregnancy. So the likelihood of you being pregnant is probably low considering you had your last shot at the end of July. You may be experiencing some spotting.
Here’s a little information from Healthline.com about the Depo-provera shot.
https://www.healthline.com/health/birth-control/depo-shot-bleeding-how-to-stop-it
It’s good that you’re taking the prevention to avoid getting pregnant when you’re not ready to have a child. It always seems to end up being the responsibility of we women to make sure that doesn’t happen. But what you could do to add a little extra protection, especially as the timing of the next shot draws closer, is to suggest your BF use a condom. It’s a little more comfort to know there’s an extra barrier there just as a backup. And of course, it’s helpful for avoiding any STDs.
Have you taken a pregnancy test, just to make sure?