THCA in pregnancy

I am terribly disappointed in myself that I haven’t been able to quit smoking. I am 9 weeks, found out at about 5 weeks and thought I could quit cold turkey. I stopped buying “street weed” but continue to smoke 3-4 grams a week of THCA flower from my local dispensary as I thought that may be a little safer since it’s less likely to be laced. I’ve considered factors such as being a heavy smoker 9-11 grams a week for 2 years and being stressed while I am a single parent of 2 young children, work full time, and am enrolled in school. My fear mainly lies around the fact that EVERY person I know who smoked throughout their pregnancies child(ren) were born with some mental delays. I know that’s not every child and parents case but the amount of people I know personally is frightening. Whatever happens with this baby happens, I’ll love him or her regardless… but I’d hate to feel like I am the reason my child might be affected by my inability to quit.

Are there any solid statistics on THCA use in pregnancy? Are there any good ways to quit quickly?