Hay, mama, I'm sorry you're not feeling well! Pero since you're 20 weeks preggy at may lagnat ka, please see your doctor or go to a clinic asap, mas importante na they check you properly para sa baby mo. I know a few of us moms had to go through similar noong pregnant kami, at ang best talaga ay makonsulta ang OB mo directly para alam niya exactly what's safe for you and baby at this stage. Don't self-medicate na lang, okay? Your doctor will know exactly what to give you. Get well soon, mamsh!