What are my chances of being pregnant?

hi so heres the deal we have been tttc for about 7 mths now and havent had any luck. this month im praying heres the info; my lp was on may 22nd, i have a 30 day cycle. we did the baby dance on may 30th, 31st and june 2nd, 4th, 5th and 7th. i got a positive on my opk at 11am on the 7th. how good do you think my chances are. my son is 7 and asks every day if he can have a baby brother or sister.