My period finished about 2 weeks ago, half a week after it finished i had a very small drop of brown blood in my knickers, half a week later, i had some fresh blood on wiping then half a week after that i had more brown blood in my knickers but this time it was very thick like discharge. I have the implant in and have had it for 3 yrs now and i have never had anything like this before, i'm in no pain or discomfort, should i be worried