Could this be implantation?

I’m on CD 32. My dr started me on progesterone suppositories Thursday. Because my levels were low last Monday. I have not taken any + pregnancy test. I am scheduled for more blood work Wednesday. I’m wondering if you guys think this could be implanted mucus ? I had light pink spotting before this as well. Cramps, boobs so sore and tender, fatigue. Just wondering if anyone else had an idea or experience too with progesterone suppositories. TIA. ❤️