Common cold during pregnancy

Birdie
Hi ladies, 
I'm 17w 6d looking for some ideas on how to safely take care of a common cold. I know it sounds simple but I was already feeling kind of weak and achy when this came on and I've become even more sick and useless.  I would just like to nip it in the bud while staying as healthy as possible. Any homeopathic/non medication ideas are much appreciated:) I've been on oranges, saltines and hot water with honey for 2 days.
On a slightly different note, does anyone have any concrete information on using essential oils topically while pregnant? I'm finding a lot of contradicting info online. I find mixing pure eucalyptus oil with a carrier oil/lotion is very soothing but definitely don't want to harm my baby by doing so...