Confused/Worried!

Nana • i have a little angel watching over me Baby Daniel † TTC
Nov & Dec of 2014 Af was a no show BFN even at Drs Appt. nurse said I had rapid weight gain 15 pounds in less than 2 mths. That could be the cause of no AF if I had a 3 month with no AF they were going to get me on the pill to reg. mc. So I had "Normal" AF Jan & Feb & here I am March & AF seems to be late again and I lost 5 lbs  is my body playing tricks on me ? So frustrated I have had 3 BFN AF was suppose to start March 9 & I haven't had all symptoms but I have been having headaches very tired & hungry! Anyone had something similar ? Plz help if you can thanks have a blessed day ❤️🙏✨