Are you getting indigestion with heavy foods?

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I've lost 16kgs (35 Pounds) using MFP. I'm lactose intolerant but I have noticed that after eating heavy foods, such as avocado and bacon together or desserts with coconut oil in it that don't have dairy in them. I get sharp stabbing pains in my stomach/indigestion. Is anyone else noticing this, after weight lose? and what foods do you avoid to stop this?