Hi, I'm Having Sever Acidity From Past 30 Hrs, I'm

Hi, I'm having sever acidity from past 30 hrs, I'm experiencing sudden hunger of food, sudden nausea at very regular intervals, I'm carrying a biscuit packet with me, it is that severe! I took a disprin 40hrs back after having my dinner, is this acidity any reaction to it. Please suggest a remedy. I'm 26 yrs old and I take normal home made food, not too spicy.