Hellobee Boards

Heat! Use some hard boiled eggs right out of the pot (wrap them in paper towels or wait until they cool down a touch), or small heating pads. Put them on both sides of your nose, right under your eyes, until they stop feeling warm. Repeat every few hours if you can manage it. The OTC spray like Afrin helps too, just be careful with it because it can cause rebound congestion if you use it for too long.

ditto @avivoca: I would get checked for a sinus infection

Man a terrible cold just went through our house too.
I take guaifenesin - I just look for whatever store brand has it as the only ingredient. It's supposed to thin out your mucus to help with chest congestion - but I think it also helps with my sinuses.
Neti pot.
Steam with tea tree oil. I just rubbed some tea tree oil on my chest and under my nose like it was Vicks.

@Bao: Do it. I had to take H last time (and she had to go to her doctor too, so she was terrified that they would cath her again, poor thing), but it's better to get on top of it now than let it drag out and feel miserable.

Ugh, I know how hard it is to go see a doctor, but can someone watch the kids while you do? You might need a prescription. Antibiotics aside, I had a really bad case when I was pregnant and couldn't take anything, so I tried heating with eggs, and also eating lots of wasabi on my food. The wasabi helped big time.

@Bao: the off brand stuff is still good if you as for the equivalent of Advil cold and sinus

Most sinus meds make me crazy or do nothing, but this one always works.

@Bao: I think Advil works better because it treats actual swelling. And mixed with whatever keeps it behind the counter it's magical

You need the behind the counter med with pseudophedrine- the stuff on the shelf does nothing for me. You can get store brand or the brand name, doesn't matter but definitely get it from the pharmacist.
The neti pot/ nasal rinse will still help even if it's a sinus infection. From what I am told more than half of sinus infections will clear up on their own or are viral anyway, so no need to run out and try to get an antibiotic right away (at least that's what the doctor said when I went in for one a couple months ago). But in my case I tried to ride it out and do none antibiotic things for ages until I broke down and took the antibiotics and t got better within days.

The things that helped me were the sinus rinse, Flonase, sudafed (the real stuff), and saline spray. But eventually I needed the antibiotics. I couldn't take anything stronger because I'm breastfeeding.

Yikes! Are you sure it's sinuses? Headaches causing nausea and vomiting kind of sounds like a migraine to me. Sometimes I've confused the two. Have you tried Excedrin or something similar? Heat (warm moist cloth or rice pack) could help because that can relieve both sinus pressure and migraines!

@Bao: good luck! That and a lot of water and some rest.