It's understandable how you feel since your son passed only about a month ago. As well as your daughter. Unfortunately, I've never had a daughter. It's understandable that at this time you can't get through 2 hours without crying. It's okay to cry, I've heard that it washes our soul.
I gave birth to only 1 child/son who was taken from me and all who love him by a drunk driver when he passed on April 5, 2010.
It's all understandable to feel as you do because when we start to cry we feel that it's never going to stop. But we do run out of tears after a while. I recall my husband going away on business a few short weeks after our final farewell to our son Joe. My self and a couple of friends I told thought it was wrong of him to leave me during the 3 weeks he was away from me. However, it turned out to be a blessing in disguise, because I was able to cry and scream as often and as loud as I was able and wanted to do it. There are times when I will be touched by something and I am beside myself. The thought of surviving and Joe not here for my life is difficult and heart wrenching. In the past 4 years I've lost many important people in my life. Losing my mother has been terrible for me because I can recall her telling the woman in assisted living as she rolled mom in the wheel chair that I lost my son and she was all I had left. I've lost numerous relatives and friends in the past and recently too.
However, regardless of how difficult I continued doing what I did before it all happened. If you want to know ask and I'll tell you what has helped me. I'm not saying it was miraculous and I and cured of pain because I'm not but it does help to do what I do for the time I'm doing it.
There are people on this site who understand and they will to respond to you if and when you post on the site for parents of lost children.
Kathleen, I'm sorry we are all here but you will get comfort and understanding from others who also feel the pain and loss.