I am trying to get pregnant and have been off birth control for 7 months. Some of my cycles are 28 days and some have been 32-35 days? Is this normal. I also have been taking ovulation prediction tests. For example last month I got my period on Oct. 1 and didn't come up positive on an ovulation test until the 23rd and then got my period today Nov. 4th. Would that be considered a late ovulation? if so is that something to be worried about?