13 weeks and terrible cold. Is Afrin spray safe?
I'm not a fan of sudafed either because of the stimulant. Have you tried a neti pot to help clear out your sinuses? It's my go to for sinus congestion along with a humidifier to keep the air comfortable. My favorite for throat relief if you get post nasal drip is drinking a mug of hot water with lots of honey and lemon juice squeezed in.
Hope you feel better soon!
Another vote for neti pot! Just make sure you use boiled or distilled water for it.
Also this page from Kellymom has a lot of useful information: