Camille,
First let me say how sorry I am. I've never miscarried, but I have had fertility issues and it can break your spirit and crush your soul. A little bit on my struggle...We tried for our first (almost 5 year old boy) and as we were about to start fertility meds found out we were pregnant. Tried for #2 (almost 5 month old girl), went through fertility, but found it was too hard for me. I have great respect for women that survive the trenches of multiple fertility treatments. We decided to adopt and started the process of adopting a baby girl from China. A year into the process we found out we were pregnant. My husband and I have had many joys and many, many disappointments and heartbreaks.
My best advice is to make sure you have an OB-GYN that you absolutely adore and is on the exact same page, paragraph, line, word, and letter with you. There is nothing worse than working with a doctor whose heart is not right there with you and your struggles.
The good news is that you have a beautiful son and you were obviously able to get pregnant and maintain the pregnancy. Try to focus on that (I know, I know....MUCH easier said than done). Also remember, Camille, the feelings you have are so valid. You're not whining, you're just horribly sad. What people don't understand is that it is this constant cycle of possibility, waiting, hoping, more waiting...then gut wrenching disappointment. I guess what I'm trying to say is that I get it! You're not crazy or whiney. It's real. It's valid, and you have every right to feel the way you do and you don't have to justify it. Hang in there. Try like heck to enjoy the day-to-day and take it one step at a time. I hope that helps a little :)