I had my u/s this morning, and everything is fine! The corpus luteum cyst is indeed on the left side explaining the issues. Baby measure exactly 6 weeks, and the hearbeat was 104 bpm. The tech was showing me the size of the baby, and I just had to laugh. How amazing is it that something that is 1/3 cm long can have a heartbeat?
On a side note, it must have been a man that invented that transvaginal u/s.