Help I don’t understand

Angie

I’m 45 with irregular period last period 6.6.2018. On ovulation day 20.6 I have unprotected sex with me partner . Until now period not come is late 14 day , pregnancy test negative ( I think 🤷🏼‍♀️) but my LH test is always positive . What happening ?!🤷🏼‍♀️ today LH test after 25 minutes