Ciara, although the flowers on a phal typicall last a good long time, they don't last forever. You have to realize that however long you have had the plant, the flowers might have been blossomed for a few weeks before that, so don't worry about them falling off. Are there any flowers left?
You asked about a spike - that's the "stem" the flowers grow on. You also mentioned that you watered your phal. What is your phal growing in? Is it in a little pot or a cup or what? Is it growing in a bark-like mixture or moss or can you tell?
If possible, post a picture of it so we can see better and tell you how to progress.
Good luck! (Isn't it nice to have a boyfriend who gives you flowers?)