Progesterone suppositories - light brown blood

Hi all - I’m 5weeks3days pregnant from IVF and I woke up today to light brown discharge mixed with progesterone suppository (TMI) on my pad. I inserted another suppository this morning and when I took it out the applicator had a drop of pink/brown on it... I know this is ‘normal’ but just looking for some reassurance if possible!

Thanks all