Common side effects of Depo-Medrol include: 1  nausea, 2  vomiting, 3  heartburn, headache, 4  dizziness, trouble sleeping,  appetite 1  changes, increased sweating, 2  acne, or. injection site reactions (pain, redness, swelling).
Other factors (e.g. stress) can result in ovulation being delayed, until as late as the third or fourth week. However, the way our care providers calculate pregnancy due dates is by assuming ovulation on day 14 of a 28 day cycle. You can already see a major reason why due dates aren't so accurate!
Ovulation occurs, specifically, when one of your ovaries releases an egg into the fallopian tubes. For a woman with a cycle that is exactly 28 days, ovulation will usually occur 14 days before the start of her next menstrual period, which is exactly 14 days after the start of her last menstrual period.