Ay nako, I feel you mama, ubo at sipon while pregnant is really stressful! Honestly, a few of us pregnant friends swear by warm ginger tea with calamansi, pero since you're 25 weeks, mas safe talaga na check with your OB muna bago mag-take ng anything, kahit natural lang, they can recommend what's safe for baby at effective din para sa symptoms mo. Paracetamol is usually okay pero again, better to confirm with your doctor para walang alalahanin, at saka pwede rin nila i-prescribe kung kailangan ng something stronger or if it's viral. Hydrate ka talaga ng marami and rest pag kaya mo, na help din sa healing. Sana mabilis ka lumabas sa ubo at sipon, mama!