Should i be worried? my one month old is congested...?

Same thing with my one month old. I asked the pediatrician what to do and he said there's not much to do if there's no fever, except wait it out. Try putting the shower on hot and sitting in the steamed room with her and sucking snot out of her nose with the nasal aspirator. Honestly, that didn't loosen things up for me enough and I couldn't suck any snot out and my baby still sounded congested. I waited until he was awake and being fussy and then I sucked. He started crying, but that loosened up his mucus and I sucked so much snot out, it was ridiculous. Now he's better sounding. You can also prop up her mattress a little so she breathes better at night. Good luck with your baby!