Having trouble with ovulation test

Stephanie β€’ My name is stephanie me and my husband has 5 beautiful kids and our first together on the way due june! I love my life!
I have had a period in a year the Bc pils I was on I didn't have one so I don't no my cycle I started on the 30th of August and my last day was the 4th of sept and i am so lost !!! What should I do it says that I should start ovulating soon some one please help me ! I have two kids but never planned like this one it kinda just happend !!!πŸ˜•πŸ˜”