Pregnancy 2..chemo and a lot of ???

So I'm around 10 weeks since my lmp and I had a transvag ultrasound today. My numbers have been 39, 54, 88 and as of last Friday 39. They don't see ectopicacy, they don't see anomalies. They just think it's unusual they don't see anything and nothing has really developed. So they want to do 1 more lab Friday, an ultrasound and possibly do a round of chemo to kill whatever it is I have. Anyone else have this? Is it safe? Not liking having these toxins...