I've been having most of the pregnancy symptoms identified a week after ovulation and started bleeding three days before my initial period which is always regular. could pregnancy be a possibility?

Maybe: Pregnancy symptoms are typically a response to elevated hormones including progesterone and estrogen. Since these are also present in the normal menstrual cycle your best bet for determining if you are pregnant is to do a home pregnancy test. These can show a positive result as early as 1 day after a missed period. The slight bleeding could be implantation.