OK, good news and bad news.
Good news is, I got blood drawn today, so I will have new bloodwork results soon.  I should have the Total T results tomorrow or Monday, whereas the rest of the hormone panel might take a week or two, since I ordered the rest through my Dr. who is always booked solid weeks in advance.  At least we will be able to look at the Total T and see how LGD affected my natural T levels in the approx. 3 weeks that I took it.
The bad news is, I think this is the end of this LGD cycle for now.  I may do another cycle later, but I feel too crappy.  This LGD stuff makes me feel overall worse than I felt before starting on it.  Basically I'm gaining weight but it's like a constant struggle to force myself to go to the gym, I just feel tired and hungry all the time.  I can't stop eating, this stuff makes me feel like a pig.  My belly is getting bigger and I'm tired all day.  Yes I think I'm getting strength gains from it, but at what cost?  I feel so crappy and my cardio has gotten worse, not better.  
I suspect what we'll see in my labs is that LGD probably suppressed my T levels down to levels that are so low they are making me feel like crap.  I already had low T to begin with so maybe this stuff is not for me, or maybe I should use a lower dosage next time, or combine it with more supportive chemicals to keep my T levels healthy.  This is a guess, we will see what the labs show soon!
Bottom line, even though I got some strength gains, I feel so crappy that I need to take a break from it and try to get back to feeling normal again.  I can't function like this, too hungry, irritable, tired, depressed, etc.  Besides, I said in the beginning I was going to try a 3 week cycle, and it has been 3 weeks, and I HAVE gained a few pounds of muscle, so it's not like this was a waste of time.  I'm just done with it for now, I need to switch gears for a while.
IF I do another LGD cycle I am thinking I'd try it at 1mg ED instead of 5mg.  As far as I know there have been no human studies done with 5mg ED and maybe it's doing something harmful to my body.  I'll probably stay on the GW-501516 because I have never had anything but positive effects from taking that stuff, but no more LGD or S4 for now, I'm going to do a PCT and see if I can get back to feeling normal again and enjoying life.  I feel like the last 3 weeks have been a struggle.
Another thing that scared me a little was I went back and re-read the study out there where they did human trials with LGD-4033 at 1mg ED.  Previously when I read the study and saw how much it suppressed the test subjects' T levels, I was looking at the Free Testosterone levels, and thought those were the TOTAL testosterone levels.  So I misunderstood the graph and it looked like the suppression was pretty minor.  But no, I looked again and this time read the graphs right, and the Total T suppression was something like 300 ng/dL, very significant!  That's like, 3/4 of the T levels I started with!  If it suppresses my levels that much, that doesn't leave me with much T in my system AT ALL.  That could make me really feel like crap.  Anyway, I probably need to keep pursuing with my endo to try and figure out why my T levels are low anyway before experimenting any more with LGD (for example, we have not done a brain MRI yet, I could have a pituitary tumor).