Short period now spotting...??? Help!

Heather • Me and my hubby have been married since October 2012 and I have been off birth control since October 2013. Trying 4 1st!
So me and my hubby have been TTC for almost 2 years now. This past week I got really sick with a cold/flu bug. I got my period on the 6th and it only lasted till the 8th. Normally it lasts up to 6 days. It ended very abruptly and now I have pink mucus, it is not brown or anything at times there are small blood spots. 
Just wondering if anyone else has experienced this? We did have sex all throughout the month and a couple of days before period. Part of me thinks it is because I wa sick but I am better now and for me to still be spotting now (12th) seems odd.. Pretty confusing and trying not to get my hopes up! Took a preg test 2 days ago and it was negative.