I forgot 2 pills.

So I am on birth control pills for 3 months so I can get the essure tubel tie. When I went to take Tuesdays pill I realized I didn't take the Sunday and Monday pill. (The holiday has me stressed out and running around it totally slipped my mind.) My husband and I fooled around Friday night and a quickie Saturday morning. Well now that I miss those two pills is it possible to have gotten pregnant? Or should I be safe? Because, I still took Tuesdays pill and so on. I just dont want to harm anything if it could happen. I dont want to become pregnant i have 3 kids and don't want anymore. Idk, I hope someone understands me lol.