... extremely careful. Well in January I got my period in the beginning and end of that month. Then in late February my period wasnt like your usual blood color, it was dark brown and on the tampon I saw a little blood but for the most part it was dark brown for a week. And now march Im about 4 days late (according to my period app) im freaking out because its already the end of march and still no period! Whats going on? :( also this has been my first year being sexually active if that changes anything?