6 days after period feeling abd twiching and cramps feels like im getting my period last period kinda weird didn't last long and it was bright red help?

Watch and wait. It could be that your period is lasting longer than usual. Sometimes, your period can last longer than usual. For the itching, you can take Benadryl (diphenhydramine) (beware, it will make you sleepy!) also, any chance you can be pregnant? Are you on any birth control? If not, this could be a miscarriage in progress.