Krystals - my thoughts would be to go and see your gp or ob. Don't be embarrassed as I'd imagine many women with tears and stitches have encountered this problem after their VB.
With both my kids I had the same minor tear with minimal stitching - and yes, sex the first time after both kids was a little uncomfortable but I didn't have ongoing pain. It was a matter of taking it slowly and feeling comfortable at all times. I think most of us have felt a little anxious about sex the first time post-birth, let alone when it's physically as painful as what you've said. All the best, xx