Hi! I am on my first pregnancy as well and i had the same experience during my first trimester.
It is definitely making us worry as we do not really want any harms to the baby!
I read up online and it is common to have spotting during our first trimester.
I took progesterone med subscribed by my gynae and the spotting stop for me.
I am in early 2nd trimester and there is no spotting anymore.
Don’t get to stressed up! And rest well for you and your baby. Hope all will be fine 🙂