A friend did the b12 hcgshot w/healthy diet@ a weightloss clinic, she got pregnant after 6wks into the prog.could it be the hcg?she been ttc for 5+yrs.

Doubt it: I guess it's not impossible, but i really doubt it. Hcg administered random;y is more likely to prevent pregnancy than help it, and they certainly weren't monitoring for ovulation at a weight-loss clinic.

Not likely: It was likely from the weight loss. Sometimes it takes as little as 20 pound weight loss to make a woman fertile, this is secondary to the estrogen and Progesterone balance.