I have the same feeling with you in the past. I really want to quit the job after having my first son. To be honest, you are lucky to have a reliable mother-in-law to look after your baby. In the past, once my son was sick, I took annual leave immediately. No matter my boss like it or not, I don't care as my sons are the most important of all. As time passes on, you will not be so tense especially when they grow up gradually, they will not rely on you so much. Take it easy, time passes away quickly and silently.
Yes, baby always get sick, and as mom I will feel very sorry to leave my baby at home crying all the time while I need to go to work. My baby girl still gets sick easily when the weather changes even when she is already 3 now. Whenever she is sick, she will vomit and won't eat her meal, so making me very frustrated. :cry: