I have had the IUD for 3 years now but i haven't had a period for about 4 years now about 4 days ago i started t spot but brown like blood and was feeling really weak i thought it was just me not getting sleep i stop spotting for 2 days and then today i started to bleed ALOT i didn't feel anything i went to the bathroom and had blood in all in my pants soon after that i started to have alot of pain weakness and cramping in my legs where i couldn't move then sooo sleepy i have been sleeping alot more so i know my body is getting sleep but my blood is really bright red could this be from the iud or a period maybe something i should be worried about and go to the doc?