Oo mama, super normal yan! 13 weeks pa lang kaya ang katawan mo ay nag-aadapt pa sa maraming changes, hormones, immune system shifts, lahat nag-uupdated, kaya madali kang masakit. A few of us moms noticed na parang mas prone kami sa colds at minor infections nung first trimester, pero usually umaayos once you reach second trimester. Just make sure you're getting enough rest, lots of fluids, at good nutrition para strong ang immunity mo. Still, best to mention this sa OB mo sa next checkup para ma-monitor niya properly at makasiguro na lahat is okay with baby. Take care ng sarili mo, mama!