HELP

a couple of months ago in april i took the morning after pill 3 times, had my period really lightly each time after i took the pill. but then about for 2 months (since middle of may) i havent had my period, i had some cramping and it felt like my period was gonna arrive soon but i didnt have it.. i just got it a couple days ago and its very light. i dont have any breast tenderness but this morning i woke up feeling alitle bit drunk and dizzy and kinda fell into the wall and had no balance and a really big headache.. (didnt drink last night or do any drugs)...
what do you think??