How high is the risk?

I’ve been taking birth control (tri lo mil pill) consistently for the past 6 months. This week I completely forgot to take 3 pills. I know there is no way to determine exactly the percentage of pregnancy risk but I’m just hoping to hear some personal experiences or some professional opinions.

I had unprotected sex Friday and Saturday. I am on week two of my pills in which I missed Monday through Wednesday. I took week 1 pills normally including Friday and Saturday unprotected sex days.
I also took the Sunday pill which is the start of week 2.

Now it is Thursday. I took a pill this morning as soon as I remembered. I am now spotting a bit which I’m reading is due to the hormone drop.

Plan B is too late for me at this point.

Any advice or insight is appreciated. Thank you