Iud help

Cait

I have had a constant period with an iud every month. I’ve had the Mirena for about 7 month. It is the time of my period and I have my regular yellow/brown discharge with red/pink in it. Is that my period? Don’t think I could be pregnant because I took a test and it was negative. Would my period just stop like that because I’ve had it for so long? I’m still cramping and getting my pms symptoms.