Nit necessarily, I would talk to your midwife if you have any concerns. Good luck x

Lightheaded and dizzy spells can b a sign of low blood pressure so make sure you eat more frequently and not a sign of miscarrying ur hormones could b leveled off or something 

I havnt had any symptoms since about 5 weeks....I'm at 9w 3d today. Yesterday afternoon I had the weirdest bout of virtego like symptoms, not like dizzy sick, but like one too many cocktails room spiny kind of feeling. I was able to still talk and walk fine but tried to lay down and it was worse. I ate a bagel and had a biiigg glass of water. Fell asleep for about 30 min on the couch and woke up all better! Although I missed the second quarter of the Cowboys game :/. I've noticed today that if I stand for a long time (like doing dishes or cooking) I start feeling a bit light headed, I just force myself to sit and have my bottle of water on me all the time.

I asked my midwife about dizzy spells last week, she said I wasn't eating often enough and drinking enough water. Symptoms come and go in waves so don't panic! Make sure you're eating and drinking enough :)