Gyno reversal letro or nolva????

So I've had a small lump and puffy nipples for about 3-4 weeks now. I've took liquid letro for a week from one source that tasted like sugar water and wasn't feeling any sides so I switched and got some from another source (green color). I took it for a week and still wasn't noticing sides besides my sex drive is completely gone. Not sure if the sex drive sides is from coming off cycle and not doing any pct Bc I went straight to letro to take care of gyno. Anyway I read austines thread on taking SERMS to reverse gyno rather than AI's so I switched to nolva this 3rd week of my attempted gyno reversal. I've taken 40 mg for 3 days so far. I'm wondering now if I made a mistake from halting the letro and switching to nolva. I feel now since my sex drive is shot that the liquid letro was working and I should've stayed with it. Should I go back and continue letro or go on with the nolva? By the way I was at 2.5/day letro when I was with it.

Gyno reversal letro or nolva????