Possible to ovulate right after period? New to using opks too..

Ashley • Babygirl Ariyah Lee Fleming 🌈👶🏽🎀 Born 12.08.2017💗 Dontrell Lee Fleming Jr💙👶🏽 Born 04.19.2019🥰
So we are hoping & praying for our rainbow baby soon!!(This will be my first child) Had 1 miscarriage in 2013 & 2nd (missed) miscarriage back in October 2016. My First period aftwr d&c started again beginning of December 2016 & have been trying since. Just had my 3rd period this month. From Feb. 18th - 21/22 (mainly just light spotting on last day only when wiped).. I wanted to start using opks asap so I knew when I was ovulating as I usually have very irregular cycles. The one test is from this morning FMU & then have both on other 2 pics from today both seem positive am/pm. Can this be correct only a day after? I'm new to using these so wanted to make sure. TIA !!❤💫🌈