Sperm are seldom able to fertilize an egg after 48 hours of storage in a woman. Sperm can be detected 5 days after sex, but there are generally not enough of them or they don't swim very well, so their ability to fertilize an egg is lost. It's still possible, because you only need one cell to fertilize an egg.
1 Migraine headache is a result of specific changes within the brain. It causes severe head pain that is often accompanied by sensitivity to light, sound, or smells. 2  Common symptoms of migraine are:  Eye pain.
For âclassical migraineâ sufferers, each migraine evolves through four separate stages, each with different symptoms. These stages include: 1  the prodrome (also known as premonitory) stage. 2  the aura (visual symptoms or tingling)  the headache or main attack stage.