14 days late very regular 28 day cycle

So my period is 14 days late.. I have taken 6 pregnancy test and 3 out of those test where light positives and the others negative.... fingers crossed my husband and I are pregnant!! I have a doctor's appointment Friday to find out for sure what's going on..... Cuz we where going to give up on having another baby. We do have a son who will be 5 this next year. But Dr was telling us I need to get my tubes checked.. and I'm only 22. I was so sad when the Dr said that I might not have anymore kids so hoping that we are pregnant with baby#2 fingers crossed