Ok, I didn't have a period in June (this is due to irregular periods..At this point, it had been months since I had sex). It came on July 27 right after intercourse...On August 2 I had intercourse (last day of period)...Lately I have been very tired and having migraines..My question to y'all is can i be pregnant? Is it too early to detect?..Im not good with calculating ovulation dates etc due to irregular periods. Have anyone experienced this?