Hi. Yes I experienced some of the same last time I was pregnant. I was incredibly tired all the time no matter how much sleep I got. I lost my appetite as well as having certain food cravings. I was nauseated constantly, my boobs swelled up, and I just somehow "knew" I was pregnant. And all this at barely 1 week past conception (meaning my period wasn’t due for at least 1-2 weeks yet). I don’t know if it’s common or not to experience pregnancy symptoms that strongly…but it was my first pregnancy. Anyways, hope this helps and if you are pregnant I wish you the best of luck. ~Kendra