what dose are you taking? a little more info on the cycle might help. if you're getting the lump from too much estrogen, then the letro will help. however...if it's from prolactin, you'll need some dostinex. if you're going to order both, which..you should have had on hand before starting, then you'd better be ready to drop about 3 bills. i just had a similar situation, although i didn't have the dostinex, so i went to the local health store and bought some vitex. i tripled the recommended dose, and dropped the deca. i also took the letro at .5 mg EOD to start, on a couple days i upped it to 1 mg, then back down. two weeks later, no symptoms.
still need to know dose and how long you've been on though.