I havent used it with Clomid yet, but I will be this next cycle!
I have used softcups in the past when I thought I was ovulating and I actually love them. I dont think I am blocking anything cause whenever I stand up after BD and dont use one, a huge glop of nastiness comes out. Lol. When I do use one, nothing falls out. So I am pretty confident they work well in holding those suckers in!