Is my husband right or should I test again?

Is 97.37F bbt considered high and my period is 8 days late. It was 97.17 day before yesterday. I took a pregnancy test at 6 days late and I think I got a negative. I just pee'd on the stick and I left immediately to go to work cause I was running late but I left it for my husband to read it and he said no line showed up by the time the control line came up. it was negative and threw it away. I asked if he waited 3 mins to read it he said he didn't have to. He's a med lab and he works with pregnancy test everyday so I think he right. It's just that I feel like I should test again sometime soon but my husband is telling I don't need to because if I was pregnant it would have showed up on a pregnancy test by now with me being this late. Is he right?