Advice and Reassurance

Please no judgement. I am a 34(F) married to a 36(M). We have 7 children total, 2 together. I love our blended family. Seems we have wound up unexpectedly expecting. My 5th biological child. I am in utter shock, disbelief, and confused as to how to move forward. We both are Christian. And I haven’t told him the news yet, as I’ve literally just found out. (He will know first thing tomorrow after an important interview, I didn’t want his mind off track). We didn’t want anymore. I even took a plan b to be safe. And I guess the little soldier was stronger than that. I just don’t know what to do. I’ve had an abortion when I was 17, worst mistake of my life. I have guilt over that decision daily. But how do we do it with so many? I know we aren’t the first ones to have many children, just financially, socially, I don’t know how we can do it. I’m trying to trust God in this, but I am a ball of confusion.