8 days is definitely not enough time for even letro to clear up gyno...remember, you're getting rid of estrous tissue. Especially if you ramp up and down on the dosage. It could take several weeks or longer before you completely eliminate the lump (that is, if it even completely goes away). Once you're done with the letro at the high dosage, ramp down and then find a weaker anti-estrogen to use after that in order to prevent estrogen rebound. They recommend nolvadex for this, but I understand even nolva has its rebound issues, not to mention its other sides. Personally, I've been using Sustain and Post-Cycle after Letro to control estrogen rebound.