Uy mama, totally normal yan sa 36 weeks, hormones are all over the place at that point, and the body stress din ng late pregnancy talaga ay nakakaapekto ng mood at headaches. A few of us had the same thing and honestly, it went away after we gave birth, pero importante pa rin na i-mention mo sa OB mo during your next check-up just to make sure it's nothing else, lalo na with the headaches kasi sometimes kailangan lang ng reassurance, diba?