Well, when I was sick I tried Sudafed and Benadryl since those were the only cold "medicines" my m/w recommended. Other than the benadryl helping me sleep and the sudafed making me feel "drugged" they didn't help. Tylenol helped the headache and sore throat some, so that's all I ended up taking.
I live on hot tea when I am sick so that was an old standby and worked better than anything else, honestly. Yes, it was in the upper 80s here, but I didn't care if it helped me breathe. I just didn't wear a lot around the house. I peed like crazy too drinking about a cup an hour, but, hey, it's all worth it.
I had two colds in the early fall, and when I started to feel sick this winter I also tried ionic silver. Honestly, I have NO idea what anyone's stance on taking it while pg is, shame on me, but I took it twice a day and I only ever got a sniffle. So, maybe you can find if I was "supposed" to take it. Oh, and it feels heavely on a very sore throat. I put some in a spray bottle (not the old Lysol one, LOL, the one from some Chloriseptic) and it was better than a sore throat drop.
I also had DH hide the Nyquill the first time I was sick and miserable. I really think I would have taken it in the congested, sleep-deprived state that I was in!