Well, given the unofficial motto of MN for babies is 'do whatever works'... We have three dummies stashed in moses, upstairs and in change bag. Sometimes they work, and when they do are a lifesaver; sometimes they get spat out with a horrified look of this is not nipple of booby! and he may or may not settle anyway.
But as aethel saays, sucking = pain relief, so if it helps then go for it!
Sequin, it's grim isn't it, the nappies when you're on anti-bs. When I took them it made DS colicky too, far worse than the couple of weeks of evening grumps later on. Hope all improves when you finish the course.
And your description of your OH's manflu is hilarious figgy, even if listening to him snore isn't... 
Yesterday had some real plus points; DS actually settled in his cot for a sleep in the early evening, both of those things fairly unprecedented, although in the past week he has been more amenable to an evening as well as a morning nap. And we got our Valentines meal; I had my glass of Kir Royale first, and to my delight found the two-episode series finale of Dr Who with David Tennant and Billie Piper- heaven!
Hope all those who are exhausted, covered in sick, cleaning up poop or merely surrounded by a fug of baby farts find that their day improves...