Understanding bbt

Hey guys, pretty new to this so hang in there with me. I just started tracking bbt and have been reading about it. I read that when an egg is released, there's a slight drop in temp. On 6/23 my temp dropped from the normal mid 97 mark. Is that enough of a drop to think I ovulated early? I'm not taking ovulation tests since we are only just now considering trying. Any insight? Just trying to wrap my head around all of this! ?​