Hia Flaxhigh!
I understand you are anxious, especially as you have a link with cancer.
I was also, but I have had no issues with taking it this way for the past 3 months. Obv I don't have a crystal ball to see into my future and whether it will have caused some issue then, as much as that would be nice.
I'm afraid in life there are no guarantees. No one person here can categorically tell you it's 100% safe for you, no matter which consultant they saw, top of the tree or not.
We are all individuals, and our personal health is in our own hands alone, not even in the hands of a healthcare professional.
Ultimately we have to make these difficult choices based on our own judgement, after looking carefully at the risk & benefits.
I do hope that there are some women here that can help you with the answers you need, they normally do so hang in there.
But if not be prepared for a plan B.
TD