TTC ovulation test?

This is my first time posting a question . I had the mirena for close to 10 years I got it after my second son . So ever since it came out we have been trying . I started taking ovulation tests to minths ago after trying for 3 months and no success . Well last month I had all the signs of ovulation but never got a dark positive on the ovulation test . This month I have been taking them for 5 days abd on the 6th a for sure positive . We had sex every day for the 6 days except yesterday. I am also 36 which I know makes it way harder so what are my chances of getting a BFP