I love this thread and will be stopping back by once I have some more to add and of course to see more of all your wonderful feedback!
I too had constipation really bad by the end of the first tri and now, halfway through the second, it's gotten better, though sometimes it's still a couple of days before I go again. It certainly adds to a feelings of lethargy and becoming a stuffed sausage. I find that eating something high in fiber or just making sure to eat something every morning as well as having a hot cup of something (I have green tea) helps keep me more regular. Not having a routine of what goes in first thing in the morning makes a huge difference in the routine of what comes out! My mom also mentioned that after she had myself or my brother, and she was having constipation issues as well, her Dr. told her to put her feet up on something like a cup or stool so that your knees are level with your pelvis and sit up really straight. She said things will just slide out. While I said to her that nothing is just "sliding right out" any time soon, I find it does help a little.
As someone else mentioned. I have also found sugar to have noticeably intense effects on several portions of my being. I do feel more headachy, especially if I haven't been drinking enough water. S/he also goes wild and doesn't settle back down for at least half an hour or so. I've had my suspicious eye on sugar for a long time now, but this just give evidence of it's immediate effects. I have cut back almost completely and when I feel like I "must" have something sweet, I try to go for plain yogurt and a little maple syrup, home made cookies (with strict moderation) or a small square of dark chocolate. Those things hamper my cravings and dont seem to have as strong of an effect.
This is my first go around so I appreciate all the input and will certainly check back here often.