i am 40.my husband had a vasectomy.100 to 150mg.of lyrica was prescribed for fibromyalgia.my period was always 28 days from day of last period.2 weeks when it was due no period.it came 2or three weeks late.started brownish then i thought it was ending.red again2&1/2 weeks of migraines and misery.if i don't take the lyrica im in a lot more pain but i dont want to bleed constantlly.help