Doesn't appear to have affected mine, I don't know exactly what my HCG levels have been but tests got progressively darker & i got 3+ weeks on a digi at 4+6.
Are you worried about your levels?
I don't know if a cyst can affect levels doubling but very rarely a cyst can produce hcg. With one of my ectopics the radiologist couldn't find anything and he wrote on the report that it was a cyst producing it...thankfully my doctor thought he was wrong and kept sending me for scans until they found the pregnancy. I hope everything is fine for you, it's so scary. Can I ask what your levels have been?