Need Help please share ur views

Kiya
My AF was due on June 18th. 5 days of missed AFwith BFN. Iam really not able to understand d symptoms. Iam waking up around 5:30am, backache, bloating,acne n lost 2pounds this month. 
I did changed my diet n did  some vigorous excercise this month. So may b dats d reason i missed my period. But we did sex as per glow.Iam so drained now. Damn confused. If someone had similar probs please share need help😭😭. I have happy few days back but BFN is a disappointment 😌