My dentist added two fillings on two of my teeth. Not it feels like its a small bump but kinda hurts. Should I tell the dentist?

Absolutely. I often make this analogy. If you bought some shoes and they didn't fit right, would you just deal with it (or not wear them) or take it back to the store to see if they are the right size, style, etc. For you? In both cases, it can't hurt to return and see if something can be done. Perhaps they just need a slight adjustment.
If it doesn't. Feel right (the bite) you should follow up with the treating dentist. Hope this helps.
Yes. Yes. Go back to see the dentist to see if there is excess material left.