Odd Cat Behavior

I have a 6 year old Maine Coon cat named Dolly. When I was TTC my first baby, she alerted me by her change in behavior to take a pregnancy test. She is usually affectionate, when she initiates, but otherwise kind of keeps her distance. She doesn't walk or jump on people and cuddling is out of the question for her. So when she started following me around the house and laying right next to my head I began to wonder. I ended up taking a test and it was BFP! I was over the moon! My son is now 8.5 months old and we are TTC for #2. I know that must seem crazy but I have endometriosis and have already had one surgery. Plus since I started my cycle again, it has come back worse than before. Anyway, just this last week, Dolly has begun to act out. She has been jumping on the counters, knocking food to the floor along with my son's bottles and generally getting into trouble. I was supposed to get my cycle 6/14 and I am unsure if I have had IB for the last couple days. For those of you with cats, is it possible that Dolly is sensing I am pregnant and has begun to act out because of another baby?