Hi, it sounds like you need some extra support with this. I can imagine it’s very difficult to stop but it does need to be you and your own motivation and determination to stop, not someone forcing you or you’ll just smoke it secretly or start up again.
Having a baby may stop someone temporarily but it is definitely not the answer. People still take drugs whilst pregnant due to addiction and parenting is hard enough without trying to do it with an addiction to weed.
Could you speak to your GP or ring FRANK? Use google to see where you can get help. Good luck