They might have dropped due to stress or acclimating to your home enviroment. This has happened to me when I bring home plants from the nursery or store. Did it have buds when you bought it a month ago? It could also be watering issues, like giving them water or not enough water at the time, just some guesses. Good luck!

Not sure but could the black specks be bugs? Here's a picture I found on the web, does the black specks resemble this?

Good luck!

Here is a link that might be useful: Bugs...

Hi, thanks for the reply. It did have a bud developing when I brought it home, bud the bud never opened and ended up dropping. On the outside of it, it had one of the same spots.
I looked at your pictures, and that's not really what they look like. The spots are about the size of a pencil eraser, and are a yellowish-dark brown color. I did a little research, and I'm almost thinking that it might be something like a calcium deficiency.
I water the plant thoroughly every five days. The leaves are doing great, perfect, actually. I just need to get this bloom problem solved. It was kept in a greenhouse before, so it might be an acclimation issue.

I was looking at some pictures earlier, and I think that it might be a case of sunburn. Some of the leaves, just a couple, had large yellow spots on them, as well as the flower that had the black spots. It gets pretty hot in my south-facing window during the day, above 100F, so I think that might be another possibility. I closed the shade and am just using my grow lights now, and so far so good...