Depending on the genetics behind your orchid, it is not uncommon, especially on the smaller sized varieties, to have multiple spikes on a bulb and even coming at a delayed time. Your plant is happy and thriving and you should enjoy this feature as you will have blooms for a longer period.
However, new growths also can initiate concurrently in this manner too. Wait and see how it develops. In any case, whatever conditions you are providing, it likes them.
