A surprise in the garden

I have not been well for the last couple of days and haven't ventured far from the bed or the couch. Early this afternoon I went to check on the garden, worried about what I may find given the warmer weather and the fact I haven't given it any water for the last few days.
The radish seedlings have emerged and I also noticed some other seedlings where I planted the radishes, rocket and carrot. They are not radishes, rocket or carrot. I think they might be pumpkin from the (almost ready) compost I added to the soil there.