Do you think i should retest?

so heres the deal. im really superstitious and this lady had come up to me and told me she had a feeling i was going to come back from my trip pregnant. (i went to go visitmy fiance) so when i got back she asked me if i was cus she had a "premonition" and i told her i didnt know. after about a week after i had i started feeling really really tired, it was like i was in a constant sleepy fog. it is very frustrating because now i have to take naps to make it through the day. i also feel really bloated like i cant even on my pants. i felt some very mild cramping a couple days after the tiredness started but it went away. i think im about to start my period..which should be on wends. but i dont FEEL like i am about to start like i normally do. i took one of those early results pregnancy test and it came up negative. people have told me that when your pregnant you FEEL pregnant... but i dont feel anything. i dont know what im suppose to feel because ive never been pregnant before...if i am even pregnant. maybe its my mind playing tricks on me? idk do youtihnk i should retest? or what should i be looking for ... what other symptoms show after 2 weeks.... can anyone help me?