You saw bleeding 17 days after the first day of your last period could this have been implantation bleeding?
It is unlikely that the bleeding you experienced 17 days after the first day of your last period was implantation bleeding. Implantation bleeding typically occurs 10-14 days after ovulation, which would be around 7-10 days after the first day of your last period. However, it is possible for implantation bleeding to occur outside of this timeframe.
Since it occurred much later than when it should have, it's more likely to have another cause, such as hormonal fluctuations, stress, or an underlying medical condition. If you are concerned about the bleeding, it is best to consult a healthcare professional for evaluation.