Pregnancy symptoms?

So lately I have been getting pounding headaches and very dizzy after sex, but only for a few seconds..my period was 2 days long and was so so light that I didn't need a tampon...now I'm a heavy bleeder and my periods are always 5 days...I've been having mood swings and feel like crying all the time...I keep wanting a specific type of food...and ice cream...lots of icecream...my ovulation cycle starts today but all I wanna do is cry...should I test?