What the he feck is this?

Am

So I am 5weeks post MC which occurred at 12w and AF has not shown her face yet. My HCg was down to 45 On Oct 11th. I haven't done any OPK's but I started temping just after I stopped bleeding. Everything seemed okay and then my temps started bouncing up and down. I temp every morning aside from two, one of which we woke up late and the more recent we were at the cottage and I slept in. But I do it before I get out of bed. Most mornings I barely even roll over. I just open my mouth and my husband pops the thermometer in my mouth (he is very helpful😍😂) and it is about the same time everyday, varies by probably just a few minutes. And my husband is not allowed to touch me or cuddle with me until after my temp has been taken. I record it on the app after cuddles and when I sit up to drink my coffee(which my husband brings to me in bed.(as I said he is very helpful.💕) So what do you think is going on here??? Any insight would be appreciated!