12bliss, wish i had an answer to ease your mind. I would wait a week after your af was due to test though becuase now would be to early.
Usually 5-6wks pg is when your breast get slightly swollen and tender and the m/s starts if you unlucky to suffer it. I only got sore breast and fatigue with #1 so everyone's body react differently.
Best advice, just relax. Lol, you will get so sick of hearing that comment but it truly is the best advice around.
Good luck and let us know.