Sayang, with an open wound from your previous C-section AND a cyst, plus you're pregnant now, please see your doctor or go to the hospital soon, especially with the abdominal pain you're feeling. This needs proper medical check-up, not just supplements. I know it's worrying, but your OB needs to assess what's happening with that wound and the cyst before anything else. A few of my mum friends had similar concerns during pregnancy and their doctors gave them specific guidance, everyone's situation is different, so you really need that proper scan and discussion with your doctor. For now, rest and avoid heavy lifting. The pain you're having shouldn't be ignored, even if you can handle it. Please don't delay, go see your gynae this week if you can. Wishing you and baby all the best, but this one really needs professional eyes on it.