1DPO and positive OPK?

Due to my drop then rise in bbt, Glow said I ovulated 10/1, but this morning I took a test and had a definite positive opk (test was darker than control). This is my third day in a row with positive opk. I know Ovulation can last 36 hours and it can span more than one day, but what if my bbt went back up? Maybe I am looking too much into it. I just want to make sure I am going about this right and what it means.