Hi Mommies, question. Need help

Hi Mommies, question. I gave birth last Nov 15, 2019. So baby is 5 months. First mens was End of January u til Feb 2. Then next was March 10. Then dapat this April 10 kung 30 day cycle. Peor kung 40 day cycle sa April 19. Nag contact kami ni Hubby nung April 4. WITHDRAWAL! Thinking na malapit na mens ko which was nasa isip ko april 10. Til now wala parin. So baka April 19 nga. Baka 40 day cycle ako pero wala parin. Nag PT ako April 12 negative April 17 negative April 19 negative April 21 negative but the next day (April 22) biglang may faint positive line. April 22 negative Sabi pag ganyan di daw considered positive. Positive daw kung within the duration ng pag check like within 5 mins. After that baka daw evaporation line. Meaning nag evaporate yung urine. So si hubby bumili ulit ng pt negative naman. What do you think?