Place linseeds (flax) in the base of a small bowl or glass. Top with yoghurt then top with the remaining seeds or tahini.
Eat immediately. Or you can leave it in the fridge for a few hours or up to a week if you perfer your seeds softer.
Notes
If your cycle isn't regular like mine, continue with the pumpkin seed combo until you ovulate and then switch to the sunflower seed option. Or if it's easier, just change over at Day 15. There's no need to be too pedantic with it. And Day 1 is the first day of your period (or the first day of the new moon if you are following the lunar cycle)