Fibroids Symptoms

Has anyone else ever had these symptoms?
My period has settled into a predictable rhythm where I know when it’s starting and when it will end. I have never bled on or past the fifth day in my life. At first my nipples were sore a week prior to starting. Then my breasts started aching but are still tender and swollen when normally that would have ceased once I started bleeding. I have a physical job and I already know how it can affect my period: by starting it sooner or later. But this is different. I’m wondering if this could mean I have fibroids or implantation bleeding? Opinions?
I started getting those syptoms when I started the IUD birth control. My breast are sore and I could lightly spot for 7days. If you are on birht control the hormones in them make your PMS uncomfortable.
Uterine Fibroid, What Symptoms Did You Experience?