I let mine sprout its taproot and then planted them in the soil under a CFL light and the last couple of days Ive left them outside in a greenhouse. Itll be 4 days today since I planted them in the soil since I saw their taproots and it will be 1 week tomorrow since I started the germination progress (got my seeds last Wednesday). However Ive not seen anything shoot above the soil yet.
This morning I put some water over them (they had got a bit dry from being in the greenhouse yesterday) and the water washed away some soil on one of the seedlings and fingers crossed it looked quite healthy. The taproot had got a bit longer and nearer the top where the seed shell is, it had gone very green. Im hoping this is the stem part trying to grow.
Ive been told not to worry about timescales so much (especially for a first time grow) as it can really vary on many things (heat conditions, humidity, soil, water, PH level and remember the seeds themselves are ALL different). As people keep telling me, they are a weed which means that although they need a lot of light as they grow bigger, they should be able to start life easily enough.
Just try to be patient and let them get on with doing their thing. Dont poke around at them either. Leave the soil on top and just keep them warm and the top fairly moist (but be careful not to put TOO much water in).
Best of luck and keep us updated with your plants progress. I feel like Im in a similar situation to you.