Implantation bleeding or period?

Hi ladies a quick help in need! I had my implant removed on the 9th January after 2 years and 10 months. My first day of period prior to the removal was 28th December and so I should have ovulated around the 11th jan which I had sex on (after implant removed) 9th jan (day of removal) 10th jan, 11th Jan and also days before the removal so sperm would still have been lurking about additionally? Iv had cramping in womb, very heavy sore breasts and sensitive nipples, high fatigue feeling very drained, strong sense of smell and now on 16th of Jan I am Bleeding. Could this be implantation bleeding or is it too soon for me to get pregnant as iv just only had my implant removed 8 days ago? Just seems like all the dates are falling exactly into place Any advice