Dizziness & Unclear Vision?

Yesterday when I got out of the shower I started drying off and then I start feeling dizzy and weak. So I head for the kitchen to get a glass of water hoping it would help. On my way there it gets worse and worse. Once I get the glass I head towards a chair cuz Im weak. Then my vision get funky. Like you know the dots you see when you look at the sun? Yeah, well I had these all over my sight. And I feel like im going to faint. I get to the chair sit down and drink and like 30 seconds later it disapeers. After its gone I shake like crazy and can hardly walk cause my legs r weak. Its been happening about once a month for about 7 months now. (Every single time was after a shower.) And now its getting worse and worse and happening about once a week. What does this sound like to you?