Can someone please help I'm going nuts

I have got a BFN this morning but my temp is still going up

CD 1 was the 8th And Lasted 5 days

Not 100% sure when ovulation happend but we BD on the 19th 20th and 21st

I'm now on CD 29 today (5th of sept)

Is there still a chance I could be pregnant? 🤞🏼🙏🏼