Let me start out by saying I've been taking low dose birth control pills for 3 years. I'm 18, sexually active, never had any major problems with health.
My period was the 10th-13th of December, it was really heavy and I even had spotting a few days before which is completely normal. I started a new pack of pills the 14th and took a week's worth, but in the middle of the week I started feeling a little nauseous, so I took a whole week and few days worth and I stopped taking them because my nausea kept getting worse and worse. I stopped taking them the 22cnd. I always start a totally normal period if I miss a few pills. The 27th I noticed a little gooey, stringy type red blood come out, then I didn't bleed anymore, but thick, dark brown, gooey/sticky discharge came out(enough to fill up a pad a day) and stopped yesterday.
Should I be concerned about this? It's never happened before.