Lemon tree lost all flowers at once

[ilovelemons]

I am very new to growing lemon trees in pots. I am trying to grow this dwarf Meyer on our pool deck. I've had it a few weeks and have been watering to keep soil damp but not soggy, never dry completely. It had been doing great until yesterday when suddenly all the beautiful flowers that has been blooming shriveled and died at once. Are the fruits still going to be ok? I haven't fertilized yet since getting it, which may be the problem. Any help is appreciated to save this!

In central Florida, hardiness zone 9A/10B

[imafan26]

If they got pollinated they will be fine. If not, the fruit will drop off.