My period this month is a bit of a weird one. Usually they go like this; day one, bad lower abdomen cramps, heavy-ish red flow. Day two and three spotting, usually brown, then it stops by day 3. This month, I started on Monday (a day late where I'm usually extremely regular) but it was just lots of brown watery discharge. Then Tuesday, I had severe lower back pain which I've never had before, heavy-ish flow but only a bit of red blood, mostly brown discharge. Only lasted a few hours. I've had a light flow of brown discharge (mostly watery, sometimes a bit thicker) since Tuesday evening and it's still ongoing. My period has been longer than normal, browner than normal and heavier than normal (the discharge is a light flow rather than spotting) I'm a bit concerned as to why there has been so much brown blood. Obviously I know brown blood is old blood and I know periods can change sometimes (my last two cycles have also been mostly brown blood but have lasted less than 3 days) but is it normal to have brown blood constantly for almost a week? Could it mean low progesterone or something?