i would wait a little bit longer then get tested again, a blood test would be more accurate! that way you will know for sure!
when i first got pregnant i went to the dr and got tested every week each of them come back negative then i finally went in for a blood test and found out i was 5 and a half weeks along, a blood test would settle this for sure!
any kind of stress can delay your period
In september i waas due to start my cycle on 9/11/03 I did not come on until 9/21/03 I thought I had concived also, so yes just wait it could just be cycle change, or stress.
You start menst. about 14 days after ovulation, so if you ovulated late this cycle due to stress sickness or just because, your period would come late. It could also mean your preggo!
I'm sure this isn't what you want to hear, but my last cycle was 36 days and the one before it was 29, so I kept testing thinking I was, but then AF reared her ugly head! Anyway, don't keep wasting money on testing- wait a few days before testing again, or as suggested go to the doctor for a blood test. Take care!
Just putting my two cents in on this issue, because I'm having this problem right now. I'm 34 and have an 11 year old from a previous marraige. My periods have been every 28 days, literally to the minute. Now here I sit, nearly a full week late, and I break down to buy one of those HPT's and the thing comes out negative. I keep feeling like I'm going to get my period and nothing...day after day. I'll post again with the blood test results, because I'm going in for one tomorrow. Obviously from the other posts, it can be possible to test negative on an HPT but then positive with a blood test (that's what I'm secretly hoping). When I took a preg test for my son years ago, I swear the 2nd line showed up even before the urine hit the stick! LOL