Pregnant?

About 2 weeks before af my breasts have been extremely sore and I get waves of nausea but no puke. I had my period last week, was mostly just spotting but it lasted longer than usual. Past 3 days my gums have been bleeding when I brush and feel like kind of swelled up. I took a test but was negative. I also have Mirena and have had it now for a about 8 months. Not sure if I’m crazy or what. My IUD has been lower and causing me issues but my doctor didn’t check it but assured it was okay because I wasnt bleeding all the time. I guess I’m just asking if anyone has been through this and what the results were.