Try this link. It should take you to your paid subscriptions page. Under Active Subscriptions, look off to the right. The start date and expiration date of your contributing member status should be shown there. Mine is due this month, too. If you paid by PayPal, it used to be an automatic renewal unless you specifically changed your PayPal settings for the forum. At least that's how it worked in the past for me.
OH NO, LOL, I always have trouble getting signed up for this, totally my fault, I only use paypal once a year and never remember how to fill this in correctly, be patent jdeg.