Your symptoms may be enhanced by your high level of stress in thinking you could be pregnant. Although, subconscience, you are tracing your symptoms back as to those you experienced when you actually were pregnant...could be clouding your judgement inot thinking you are. I doubt if you really are pregnant, however to air on the side of caution, why not go for a moare reliable form of birth control...the "mini" pill will only suply you "mini" protection. I would suggest you have a conversation with your doctor about other options for a preventive outcome.
Good Luck,
Faded Rose