Possibly pregnant? Or weird body?

Julie • I am a yoga instructor! My husband and I are trying for our third baby!
My husband and I had sex on my fertile days I had a ton of pregnancy symptoms and I was four days late with negative tests. then i got my period. It was normal except i had no cramping or period related symptoms. And now that my period is over I noticed I'm bloated again and my nipples are bigger and darker.  Any one experience something similar or know what's up?