Hi I Recently Got Over My First Sinus Infection In

hi I recently got over my first sinus infection in February. I did so all natural, with nose rinses, drinking apple cider vinegar, cutting any and all dairy out and within about 2 1/2 - 3 weeks it was bearable. last night my nose was very dry and stuffed although I was unable to blow anything out, seemed very dry. today, my left nostril is clogged, still not able to blow anything out, and will drip clear fluid spontaneously without warning (which is how my last sinus infection started). I am 10 weeks pregnant so I do not want to take any medications. I also DO NOT want to get another sinus infection, as it was one of the worst most frustrating things to deal with. I literally felt as if I was going crazy. is it too late for a preventative natural treatment? has it already begun to come back?