Progesterone oil & spotting ?

DL 👩🏻👨🏽‍🦱💉🌈💙

Is anyone taking progesterone oil and experience light spotting? I take the oil every 3 days and suppositories 3 times a day. Every 3rd day when I’m supposed to take the injection I get light spotting pink/brown. No spotting any other days. I’m almost 7 weeks... just wondering if this is normal with the oil? I should probably talk to the nurse.