Sorry to hear what happened to you Racheal. but I agree with KeenAs, it could dissappear the next month because that happened to me, twice! So maybe don't panic yet!

Doctor normally should advise you to wait for 6 weeks to do another ultra-sound and it most likely will resolve itself - dissappear. did you doctor ask you to wait for 6 weeks Rachael or he recommended to have surgery straight away? Hopefully, it will dissppear!! Keep us posted!

Grace