Good ole Robitussin works well for me. Just look on the bottles to find the one that addresses the symptoms you're having. It wouldn't hurt to make sure you're getting some vitamins and fruits and veggies. Make sure you're drinking tons of water to flush out your system too. And as hard as it is with two little ones, you need your rest!! Can you lie down for a nap and forget the housework when they're down for a nap? Or even let them curl up with you in bed or on the couch and put on one of their favorite movies, and you snooze while they're mezmerized? It sounds like even though you're trying to get better, you're so busy that you're not giving your body enough time to recouperate.
I'm now editing my response after reading all the others. If you keep spending money on all these remedies, you will have spent as much as it would have cost to go to the doctor in the first place!! First off, it does sound like you're using too many things. When like one person said, you need to let your body do the work. I would try to lay off the medicine during the day and use it mostly at night when you really need it to help you rest, and stick to ONE medicine. Like I said before, find one that specifically addresses only the symptoms you're having, instead of something like nyquil or tylenol cold. Those are like "bombs" with tons of medications in them, and if you're taking something for a symptom you don't have you're just putting something else in your body that it's going to have to process. That's only making it do more work on something besides your illness which is the priority! SO, eat well, drink TONS of water and SOME juices/gatorade. Then take something at night to help you sleep. And again I say REST. Otherwise this cold/flu will keep returning!