Ay, get well soon, mama! Ginger water and oregano leaves are generally okay and maraming Pinay moms swear by them, kaya go lang, pero since you're pregnant at may fever ka na rin, better check with your OB to make sure, especially if the cough and sipon don't improve in a few more days or if you get fever again, kasi gusto nating sigurado na okay lang lahat sa baby. Lots of rest, stay hydrated, at the usual, warm liquids, honey, and saline gargle din nakakatulong sa ubo, but your doctor can also prescribe you pregnancy-safe meds if kailangan na talaga.