High temps during period last 3 cycles?

For my current cycle and the last two, my temps have remained high (97.5-98.2) during my period. (Take a look at my charts to see what it looks like). My BBT eventually drops quite low before rising again, but I’m trying to figure out if I’m even ovulating, because historically I’ve had a very typical pattern with temps dropping the day before my period and remaining low until ovulation. My husband and I are are TTC for #3 ... our first two happened within 3 cycles, but this is cycle 6 this time around and no luck so far. I’ve had a Mirena before and between each kid, so I don’t even have a lot of accurate data in regards to my BBT historically.

Any ideas would be helpful! My cevical fluid has appeared to have normal patterns