Hi A.,
I agree with those who've suggested the Sinus Rinse (NeilMed makes it) -- it's a squeeze bottle, and much easier to use than a neti pot. The Breathe Right strips can help some, but I would recommend the brand-name over generic (they stick better), and make sure that you get the right size for your nose. Vick's Vapor Rub under the nose can help, too, and if your nasal passages are dry, you can put some saline gel inside your nostrils (like Ayr Gel). Using a humidifier is a good idea, too, and if you're having trouble sleeping, you can put a few drops of lavender essential oil (to relax) and/or eucalyptus oil (helps w/ congestion) on your pillowcase.
I'm also pregnant (36.5 weeks) and am getting over one of the worst colds of my life. I asked around for suggestions, and one friend suggested a garlic poultice on the foot. I thought this was strange, but decided to try it:
Mince 5 cloves of garlic, put in a bowl/container with olive oil to cover. Allow to sit for several hours. Before you go to bed, strain off the garlic, and rub the oil on your feet (I used gloves so my hands wouldn't smell). Put on old socks and leave them on till morning.
Another thing you can try is tomato "tea" -- 2 c. tomato juice, 2 T. lemon juice, 2-3 cloves minced garlic and as much hot sauce as you can stand. Bring to a boil, then pour into a mug and drink up.
If you don't like tomato, you can try a mixture of lemon, ginger, honey, and cayenne pepper.
Best of luck and feel better!
R.