Temps all over the place?!

Have been TTC since May, had a MMC in July around 8wks, D&C in August and first cycle back in late September. After all that, decided to lock in a little more beyond just OPKs, and have been using the Premom method. I’ve been temping for just over a week, and based on OPKs I should 🤞 ovulate in the next 2-3 days. Currently CD20 which is about standard for me pre-MC, but my temps are all over the place.

Like it’s a big jagged line that looks very different from the examples I’ve seen on Premom and Reddit. So I don’t know how any of the temp info is helpful. Is it good to assume that my temp increase will still be as jagged but trending upwards? I test every morning right when my alarm goes off (always between 6 and 7:30am) before I get out of bed. Am I doing something wrong, or will my line look less jagged once I get more variation after ovulating?