I posted something about this a while back as I was curious also. if you can find my post it had a link to tons of stories saying they got a BFP using them.
Thank you for all your comments. I need all the info I can get in this ttc journey. You ladies are great!
I got my BFP by drinking the grapefruit juice, eating pineapples and taking Robitussin DM. If you use robitussin, make sure it only has Guaifenesin in it. All these things will help create fertile CM to help them lil swimmers complete their mission :)
I tried them, but found them to be messy and uncomfortable. I had better luck drinking grapefruit juice and using preseed. In theory the soft cup makes perfect sense, so I would imagine if you can get them to be comfortable then it would help keep the swimmers in the right location.
I know that we've talked about them a little bit on this group and a couple of people have tried them. But I can't think of an exact instance of a BFP resulting. Although, I've read lots of good stories online of it being succesful.
Implantation can happen between 6DPO and 10DPO. Implantation is what causes HCG to be produced which is what an HPT is picking up on. It's usually best to not start testing until 12DPO, but none of us here are very good at sticking to that rule - LOL