has anyone ever had implantation vomiting?!

Hi, so I'm 21 and on the pill. 3 days ago I suddenly felt very nauseous and proceeded to throw up, a lot. This was at 11 at night and around 14 dpo (I'm not tracking so not exact). Ever since I can't stand the smell of food, have been bloated, very tired and had a headache that comes and goes. I really hope I'm not pregnant and I'd never heard of implantation vomiting before but I googled it and it seems other people have experienced it? Anyone help me out a little? Also I haven't taken a break in my pill due to it being christmas, so the day I vomited would have been my first pill free day, 2 days before my period would have been due.