Aww sis, congrats on your pregnancy! Para sa sipon, honestly ang safest talaga ay rest, lots of fluids, at steam inhalation, a few of us pregnant moms swear by yung simple remedies na yan, kaya mas peace of mind. About Biogesic and calamansi juice, better check with your OB muna para sure, kasi different doctors have different takes depending on your full health picture, at gusto mo talaga na ma-clear yan directly from your doctor rather than kami lang, pero majority ng moms I know ay mas umiiwas ng meds sa first trimester if pwedeng-pwede na through natural methods lang.