OPK and BBT are just weird, getting frustrated.

I have been tracking my bbt and using an opk for this cycle. It's the first time I've tried either of these. I have regular cycles. I'm like 99% sure I don't have PCOS or endometriosis or fibroids or any of those things. My periods are normal, and my cycle averages 29 days. The latest I've been in the last year was 6 days which only happened once, and the earliest was 2 days which happened once or twice. I have been regular my entire adult life. I don't spot between periods. I get some bad cramps from time to time during my period, but nothing max strength Tylenol doesn't reduce.

I have been trying for 10 months now, and the calendar method has produced ZERO results. I'm trying for my first. So now I have resorted to bbt and opk, but Glow says that I have entered my fertile window and my opk tests are not showing any difference--except the last two tests have been even lighter than the prior 3. I started opk on what should have been CD 8. It is now CD 15 according to Glow. Not to mention the control line is always lighter than the max, which according to my test kit instructions should be the same as the max color.

My bbt is a whole other beast. It started out at 97.17 back on CD 4. Up to 97.50 on CD 7, the last day of my period, then it dropped to 96.78 on CD 8. It continued to fall through CD 10, where it reached 96.65. Then it increased significantly through CD 13, where it reached 97.88! This was 0.69 above CD 12, and 1.23 above CD 10. But on CD 14 it went down again, and then down again today. Today it was 97.10. I thought bbt was not supposed to have such significant ups and downs until the day after ovulation, and even then, it was supposed to stay elevated through the end of AF.

IDEK, I'm just getting frustrated. Plus my stupid brand new bbt thermometer battery died after just 10 uses, so yesterday's measurement might not even be accurate because I had to use a different therm.

According to Glow, I'm supposed to be ovulating in 2 days. According to my opk, I'm not even close. According to bbt I am an alien.