Mosquito Bite, I have apparently lost your e-mail address.
When your inbox is full of PMs and you can't read new incoming ones, you need to put some of your older messages in folders. Look at the top of your Inbox. It shows you what percentage is full.
Set up folders under "Rules, folders and settings". Once you have moved some messages out of your inbox you'll have space for the new ones to come in.
If you do a lot of PMing (as I do) you will find there are frustrating limitations to the PM section of this site. That's why I have switched to normal e-mail with some of my contacts.
(Can you re-send me your e-mail address please?)