I accidentally ate maybe 2-3 worms (tiny , white in color) from a ripe mango. i didnt notice right away. should i be worried? would they be harmful in my stomach?

I doubt these will be anything more than an alternative protein source, digested by your body or expelled dead in your feces in a few days.

Most likely they will be destroyed by the acid in the stomach and other Digestive enzymes. The likelihood of being infected by them is low, the problem is if there are toxins or other infectious elements in the infected or rotting mango. Best to wash and inspect fruits before consumption. If symptoms like Belly pain, nausea, vomiting or fever develop, see PCP/GP.