I'd give it plenty more time, Monica (and I LOVE your name, by the way--I knew you were a "neighbor" as soon as I saw that name
). Salt that you take in on a Sunday may cause a bump in the scale until Tuesday or Wednesday, maybe even longer. Not that that's a bad thing, just something that you need to account for when you look at the scale. Remember that it measures your weight, not your fat--and there's no way that you gained any fat from eating a bowl of soup unless that bowl contained 3500 calories of soup.
I have tasted some oyster-artichoke soups that might really have had 3500 calories per bowl, but I doubt that's what you ate.
I'd also be careful of the Dulcolax and any other laxative unless you're really miserable, if possible. I've known people whose systems become so reliant on a little help to "keep the mail moving," so to speak, that without them, they just suffer miserably. You've been at it for under two weeks, so give your body a chance to adjust to its new way of eating. Sometimes that means feeling blocked up for a day or so, but it's worth it to wait it out and let your system find its new equilibrium.
Skye--as others said, the fact that you went to the gym speaks volumes about how dedicated you are! Be proud of that accomplishment and of knowing how you can fix it next time. Maybe you had good reason not to push yourself that night; that's often the first indication that I'm coming down with something, when I just can't get the "oomph" in a workout that I should. Sometimes our bodies know best, y'know?
I'm glad you're feeling better now, though.