I was curious, about 4months ago when I was taking Nolvadex; near the end of the pct I was getting ever so slight headaches. I did the nolva for a month 40, 20, 20,20. The headaches started around 3rd week and lasted for almost 2 weeks after. 3 weeks total. Is that normal and is there anything I should be worried about. My sex drive decreased alittle bit too, but not to worried about that.