Light pink discharge while taking progesterone

I’m 6w4d with twins, I’ve been taking Endometrin progesterone vaginal tablet with an applicator since before getting pregnant,

Today i had a very light pink discharge

I’m kinda worried, should i go to the emergency or wait for my appointment on Wednesday?

I don’t know if it’s from the progesterone or something else,

Anyone experienced the same while taking progesterone?