5 days late and still getting BFN

Lorraine

I’m on CD 40 and I’m still getting negative pregnancy tests. My cycles vary from 31-37 days. They never last this long. ( when i had the flu my cycle lasted 45 days 😬. I don’t count it since medicine made my cycle crazy) last month my cycle was 31 days and i can always feel when im going to start my period. This time nothing just feel nauseous. I tried clear blue, Walmart cheapes, first response, and amazon pregnancy tests. Can anyone relate to this? Should i get a test done at the doctors office? TIA

Update * CD 44 still no period. I took a lh test strip last night just to see because i bought a new brand and it was positive!!! So im just now ovulating on cd 44. Ive had ovulation pain all day. This is crazy!!