16 weeks pregnant w/ a sinus infection...what can I do?

I'm 16 weeks pregnant with my first! :-D But unfortunately I've managed to get a sinus infection. Even before I got pregnant I would get sinus infections 2-3 times a year and this sinus infection seems to be intensified with the pregnancy. My head is so full of pressure, my nose is both stuffy and runny(I can hardly breathe), and due to all the heavy mucas and drainage my throat hurts and its making me nausceous and I keep gagging. I use a saline sinus rinse and that helps but is there anything else? The OB nurse said I could take sudafed but I just don't really wanna take any chances with medication(and sudafed is a Cl B so that makes me a little leary)...Any home remedies/natural remedies anyone's got that won't harm my growing baby? Please help, I'm miserable.