Mommy’s first cold-advice please!

Hi, FTM here, my baby is 14 weeks old and is breastfed. I am unfortunately coming down with a cold, first time I’ve been sick since my little guy has been here. What can I do/take to fight it off? I don’t want to pass anything to him when I feed him so what’s safe as far as meds or vitamins or anything goes? I’m still taking me prenatal vitamin and I usually take a lot of vitamin c when I start to get sick (especially because I’m an elementary school teacher!) but I don’t know if it’s okay to do that now. Thanks!