Morning after pill

I took a morning after pill (ella) 7 hours after sex bc i was ovulating (cycle 11?).  It was 7 days ago from today. 
Everywhere on the Internet says that the side effects would go away within 2 days, but the thing is, i think I am still having them like feeling nausea or dizziness frequently. Can it be possible to have side effects for this long time? Anybody experienced like me? Any comments welcomed.