Medoxyprogesterone??

I was prescribed this yesterday in tablet form, as I’m 22 days late. My urine pregnancy test came up negative, but my blood test hasn’t come back yet. I’ve been experiencing some pregnancy symptoms even before this (I’ve only been on it for like, 24 hours), and I was wondering how it’s effected anyone else? I’ve been having frequent urination, nausea, breast tenderness/pain, headaches. back pain, and really watery cervical mucus. It’s hard to tell what’s actually pregnant or pms, but I’m guessing it’s made worse with the meds. Any advice? I have no history of issues with hormones either.