Period problems...

Je

Hey ladies! Not to sure how to tell and I am starting to get really anxious not knowing. So let me start out by saying I have slightly irregular periods but only by one or two days. I am now 5 days late for my period and have taken 2 at home pregnancy test that were both a no. I took one in the evening last night but it was a no, so I figured I would wait and take the second one in the morning to see if I would have higher levels. But that seconded test also came back negative. Not sure what to do yet. Should I wait and see if I get my period or should I make a doctors appointment to get a blood test. I should also mentioned I have been experiencing slight nausea, some abdominal discomfort, I am peeing a little more then usual but that could be due to me drinking a little more water. Also my boobs don't hurt. I need some advice ladies.