bed bugs! ewwwww!

So why?!?! :,( any methods of getting rid of them?. We bombed the house yesterday and they came back the next morning! I crushed one this morning. It was filled with someone's blood! My boyfriend said he saw it come from behind me. I was so disgusted. We got a hint from the bite marks in a straight line on our skin. And my baby girl is getting bit too. We have tried pesticide, they still came back! I feel sick :,(. Someone help!!