I’m confused am I not going to ovulate

I have had couple of days of positive opk with my highest positive being yesterday it slow declining from last night but they are still classed as positive through app but here’s where I’m getting confused I bought a bbt monitor this month but my temps I think are inaccurate as I tested this morning at 36.30 but seconds later I took it again hadn’t move or had a drink still and it came up 36.44 so does this mean my bbt isn’t working and I should scrap it and get a new one next month should I take the opk as I ovulated help someone please