I m 22 and have been on the depo for over 4 years, last month I switched to the pill instead. I took my last pill of my first pack last night before bed, and when I woke up this morning I had a little blood in my panties but it was kind of thick & brownish. I took a shower then inserted a regular size tampon. 5 hours later when I took it out it wasn t even half way covered with the somewhat thick brownish blood and hurt because it was still dry. What is this? What does this mean?