Okay mama, headaches at feeling mainit kahit pare-pareho lang ang temperatura ay common talaga sa 2nd trimester dahil sa hormonal changes at increased blood volume, pero kung ganyan kadami ang frequency at laging mainit ang pakiramdam mo, mas better pa rin i-check sa OB mo para sure na okay lang ang blood pressure at walang infection, hindi malaki ang hassle at peace of mind lang yan. In the meantime, drink plenty of water talaga (good call na yan!) at rest in a cool place, pero don't rely lang sa home remedies kung patuloy ang episodes, okay?