Marijuana withdrawals?

I've never seen a post about marijuana on here so I don't know if it's acceptable or not to post about this lol. But I've been steady smoking for a month or two? And I recently stopped this tuesday. I've stopped smoking for a decent amount of time before, and I got the usual cravings. But now I'm getting headaches, feeling nauseous/getting cramp is after eating and I keep waking up during the night. At first I thought I could be pregnant, but I literally just had my period. I also just got home from college on wednesday so I'm still acclimating to home life, so I feel like my stress could be making it worse. Am I experiencing Marijuana Withdrawls?