longer cycles after miscarriage?


I have had one period since my miscarriage and now I'm late, I had what I thought was a very faint line 2 days ago but it must have just been the test. I'm 5 days late and no sign of period or pregnancy. I have taken dozens of tests and I don't know what's wrong because it's all negatives with a couple that could have been faint lines but now today all 3 are negatives. (I have an endless supply of tests) Losing it, don't know if I should keep looking at cloth diapers or start wondering if I'm ever going to have a period again. Has anyone had longer cycles after your miscarriage?