High readings

Br
I have gone this whole time (24-36 weeks) with all low numbers. These last few days I've had a ton of high ones. I'm not sure what's going on?? My GD has been controlled with diet. I'm doing nothing different. This morning my fasting level was 88 (usually 68-75). I had one slice of toast with peanut butter like always and my levels are usually about 110-115. Today it was 150!!!! For lunch I had a lot of protein and one slice of bread and it was still 168!! I'm concerned 😔 I don't want to be put on meds. Especially this late in the game after I've done so well. What should I do?