I'm sorry you've been triggered and hurt so deeply CB. And that Dr is a douchebag, kids develop at their own pace if they didn't then there'd be a manual, yes they measure milestones, but children are individuals, my daughter didn't crawl or teethe until quite late, and I assure you, 8yrs later she's an intelligent young girl, Your baby is still a baby, savour this time. My brother spoke full sentences by 10months, my nephew on the other hand is only using sentences after 2yrs. The difference between these very similar characters? My nephew's not slow, he just didn't have a need for real words bcoz his parents understood him as is... Be patient with yourself and your little one. From the little I know about you, I know you're being the best mother you can be, and that in itself, is the best gift you can give your child.
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Its not easy being alone, sometimes it's downright unbearable, but that's why I love this place, so many people, who care and understand...
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I don't have ptsd, but I understand suffering, please keep posting be kind to yourself.