Period

Olivia

So I've had a brown discharge for a week and was supposed to get my period today but... nothing!! I have the implant in my arm and was put on the pill for 4 months to regulate my preiod because i was bleeding for a month straight, after i got the implant. My boobs are a bit sore and i have had light cramps today. Is someone able to explain whats happening? I'm not worried i just want to know if this is normal!