Help me

Katie • Hi Beautiful ladies,I’m a mother of 3 beautiful kids I’m trying for baby #4 🤰I have 11 babies in heaven I’m happily married to the love of my life

So I’m either 10-11 dpo today I has a positive opk on aug 23rd my period is suppose to start Monday, yesterday I had a dip in my temp but it’s went back up today. Today I wiped and I have brown spotting can someone help me figure it out I’ve done tests n they r all BPN So now I’m confused