Help!

Kaitlin

Hey guys! So my period was 4 days late. About a week ago I was experiencing some spotting that looked similar to that of implantation spotting. This spotting only lasted a day and then cleared up. However, today I had a heavier flow, nothing to fill up a tampon yet and it is brown and a dark maroon in color. Is this the start of my period? I am also experiencing very bad cramps. Thank you in advance for the input!