Vertigo

Hello!! I suffer from vertigo and dizziness now and then... it is especially worse when i workout(i know it but keep working out because i wanna be fit) and also around ovulation... it actually went away during pregnancy and breastfeeding but now it is back full force... it is horrible because sometimes i wake up in the middle of the night with some serious crisis and im alone with the baby and i got really scared i will faint or something!! Has anyone had it and cured it? Im a very healthy person so i honestely dont know what is causing it...