Average is about 20 at 4 weeks LMP, and 40 at 14 weeks LMP. It is important to note that while a higher progesterone level corresponds with higher pregnancy success rates, one cannot fully predict outcome based on progesterone levels.
Shanghai Tunnel Paranormal Inv./Human Trafficking Ed. Fundraiser. Be the first to officially investigate a new section of the Shanghai Tunnels with renowned ghost hunter Robb Demarest, tour an established section of the Shanghai Tunnels, and support our efforts to educate the public about human trafficking.
World Top 10 Longest Underwater Tunnels 1. Seikan Tunnel -- 53.9 km -Japan's Seikan Tunnel is the longest underwater tunnel in the world, and is located beneath the Tsugaru Strait. The tunnel connects Hokkaido Island with the Aomori Prefecture.