Cyst in uterus????

Cara

Please help! I had my first scan today, I'm 6 weeks and saw the heart beat which was great! But then she also said there's a really large cyst in my uterus and to come back next week to make sure it's going away. She said it could indicate there's a second pregnancy in my tube, or could just be from the meds I was on to induce ovulation. Has anyone had this or have any advice? I'm very worried 😢