nolvadex plz help

i am not on a cycle now but i have an extra nolvadex from the last cycle (coz i didnt have to use it during the cycle) i thought to give it a try jsut to supress the estrogen,3 days after i started to take nolvadex at 10mg/day+50mg proviron i felt my nipples are getting smaller( I mean very small )and itchy so i stoped it and those symptoms are gone does any 1 had this i know it is weird and i wonder why it happened to me