I planted my bulbs, green shoots started nicely and now a flower is beginning nestled low down in the leaves but no spike!!
This is fine, and normal for most plants, though it may need more light. It will stretch, just give it time. Here is an article for their care: https://www.gardeningknowhow.com/ornamental/bulbs/hyacinth/planting-and-care-of-hyacinths.htm