what’s wrong with me?!

Tala
Hi guys, can u pls help me!!
I had sex about two month ago, then my period started 13 days after my sex, about the end of the period until now (about 1month and a half) I saw just spot on my underwear, but the period isnt start! And the frtil is bloody! 1 weeks ago I use baby check and it’s negative! Whats wrong with me! Why the period isnt start wet?!
By the way sorry if I have grammer problems in my writing I’m persian.