Stars in vision

Danni โ€ข ๐Ÿ’™๐Ÿ’™๐Ÿ’™ ๐Ÿ‘ผ๐Ÿผ ๐ŸŒˆ 4โ€ข20โ€ข22

I am 17+6 weeks. I just had something out of the ordinary happen. I took a drink of water and then had sudden awful pain in my head that only lasted 5-10 seconds and then after had stars in my vision. Since that happened (only 10mins ago) I know feel off. Like a little light headed, very minor headache, and tightness in my head. This is my 5th pregnancy (4th kiddo) and havenโ€™t experienced this before. Trying to not let my anxiety get the best of me. Happen to anyone else or any ideas on what it could be? Donโ€™t see my OB for another 2 weeks. Thanks for any info.