Getting my period TWICE a month since ttc..wtf!?

So ever since my husband and I started ttc I've been getting my period twice a month. I'm regular and normally get it every 30 days...we haven't been trying for that long, it's only been six months & I understand it takes time BUT the twice a month period alarmed me. I saw a doctor and did an ultra sound and she found a polyp in my uterus. she said a lot of women have it and don't know and sometimes it comes and goes. She wants to to an xray to get a better reading and I'll be doing a bunch of blood tests. Has anyone ever experienced this?!