I am 7 months pregnant and my dog is snapping at me, what should I do?

We have a Lab dog around 18 months old. We had a problem with her being aggressive around her food dish so we contacted a trainer. He told us to put a pinch collar on the dog and correct her hard. The situation got worse. We then contacted another trainer who told us that we must take an obedience course (one on one) and teach the dog what we expect from it. He also stated that the first trainer should not be training dogs because the dog must know what no means first before we give a hard correction like that. He also said that the correction when given must be very hard. After we started this training, the dog did a 100% turn around. However, the training ended and it has been 4 months since the last lesson. She was socialized in class, distractions during stays, and she did great. The problem is this, sometimes she acts aggressive. The other day I went to pet her on the head and she bit me. The next day the same thing happened. I am 7 months pregnant and I am so scared. Can you please help me. I am afraid she might snap at the baby.



Tina