Hello .This month I had an extremely strange period, it started very light brown then overnight I had a heavy bleed which went on into the day, then the next day it went quite light (no pad needed) and only brown when wiping the last 2 days. I usually have extemely regular periods (every 30 days, lasts 5 days, starts heavy and becomes light, not usually brown but when it has its only been this case for a couple hours). And unsure if it s related but yesterday I woke up and thought I d injured my shoulder blade. I went to the physio and he informed me I had done something to the muscle between my ribs. On day 2 and I m still in pain from it.Any ideas?