Not sure....

So, we were supposed to do IUI on Christmas Day and there was an issue with my husbands count when there hadn't been one previously. The cycle was cancelled and turned into a timed cycle and I was supposed to take a test today if I didn't get my period. The thing is, I did get my period today but I've also been super nauseated all day and lightheaded and I've never had those symptoms before. All of my co-workers think I should take a test in the morning just to be sure. Anybody have any other suggestions?