I only have blackmores pregnancy and breastfeeding for supplement. Is it enough? Do I need to take any more supplementary?

Don't need. Just a balance and varied diet will do. Some pple will wanna make food choices that have higher iron and calcium too. Anyway if u take too much supplements, u run the risk of constipation and also just end up releasing very nutritious pee / s*** as it won't be all absorbed by ur body too