Nearly 8 weeks from LMP, HCG too low, rises then drops

Rosie

I'm nearly 8 weeks and my hcg is only 270, last week it was 232, two days later went up to 350 and a week later it's dropped to 270. Miscarriage is a definite right? No one will give me a straight answer. I've been lightly bleeding on and off for 3 weeks now.