Lost almost my entire Twitter account! I am no spammer!

Can anyone explain to me why I lost 7,000 followers and 7,000 people I was following overnight ( Thurs 07/23). Some of these may have been spammers because I have to clear my account every few days for spammers but most were genuine professional people I am connected with. I am no spammer and take my work on Twitter seriously.
Over the past few days, I have had numerous tweets with my name attached from Monkey monitors and followermonitor. Yesterday, I blocked their accounts and then this happens! Anyway anyone knows anything that might help my distress!