generally with test only cycles, nolvadex is OK (not the best, but generally effective). The puffyness and hard tissue may even go away with nolva, but when there is puffyness its less likely.
people often give advice that they dont understand. Like "dont use anything till you get the gyno"... NO... thats really bad advice. use an Aromatase inhibitor (AI), preferably exemestane or AIFM (otc). you can even low dose, if you want more estrogen (the concept of estrogen related anabolism is one of much contention--- what is not of contention is that excess estrogen is the cause of almost all the side effects of test based cycles). even just moderating that estrogen with a low-moderate dose Aromatase inhibitor (AI) can make a significant difference.
nolva on the other hand suppresses Igf-1, so using it as a preventative is not as reccomendable... plus many of its effects are estrogenic...
And you are using nolva, which may or may not help, depending on a lot of factors. because of the mixed er activity, under some circumstances nolva just wont be doing much, in others it will work fine (because its actions relies heavily on receptor distribution and regulation-- which can be different because of genetics or other factors)....