Implantation?

Madison

My period was from the 8th to the 18th and we’ve had sex on the 21st, 23rd, 25th and the 26th. Now it’s the 27th and I’m experiencing light bleeding. My <a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation calculator</a> said the 22nd so I’m curious if this could be implantation...