VERY early pregnancy??

So if i’m pregnant it would literally be VERY early on, but i had pink spotting a few days ago, after suspected ovulation me and my partner had been BDing for a few days before ovulation to increase chances, it’s now 3 days since i had light pink spotting and i’m currently feeling so nauseous, caused by nothing, i just woke up because i felt like i needed to throw up, eventually i did and now i’m perfectly fine!! my question is did anyone have symptoms straight after implantation at all? i just don’t have any other explanation for it