sorry for the long post but, new to all this

so iv been having what I really really hope is early pregnancy symptoms. extreme fatigue, nausea, headaches, iv noticed my sense of smell seems to be a little stronger. Also I read somewhere that your teeth and gums can become more sensitive during pregnancy and I noticed that mine have. And iv had some cravings earlier this week but today even the thought of food made me nausiated I just really hope these are pregnancy related and not pms, I sometimes get headaches before my period. glow says af is due Friday but but my periods have always been kind of irregular and I'm not really sure when I ovulated, iv never taken any opks or anything, I just know what glow says but my husband and I bd a lot around the time I might have ovulated so hopefully this is it. im new to all this so who knows though, maybe its pms, maybe its all in my head but hopfully its not either, anyway sorry for the long post just needed to at least type this out instead of just think it to myself all the time and maybe get some support from some other ladies who have gone through this