Over supply & milk imbalance

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I have a 5 week old and have been breastfeeding from the start. I was alternating breasts at feedings but then about a week ago I changed to try and get her to feed from both st each feed. Since then my boobs get full very quick. Also my daughter is extremely uncomfortable with trapped wind and has had hardly any poopy nappies but a lot of wet ones! Her abdomen is really really bloated and hard.

After some reading I think I may have an oversupply and she’s been getting too much foremilk which is causing her discomfort. Has this happened to anyone else?

I did read that foremilk has a lot of lactose in it so her bad tummy could be due to her body not being able to cope with the extra lactose. Apparently lactase drops might help, has anyone tried these?