Am I Pregnant? :: Blue Veins Around Sore Breast And Legs

so the last few months i've been having many symptoms, like going to the washroom every half hr to an hr sometimes a few hrs, i've been cramping, last month my period was late by a week and it didn't last very long only 4 days and this month it was late again but it seems very light not like my regular period. I've been puking up sometimes, sometimes bad sometimes not bad but it wasn't in the morning only during the daytime and been craving weird foods some foods i didn't even like until now..I took three pregnancy test and they all came back negative and also went to my community healthcare and asked for a preg test but that came back negative so right now i'm very confused about the whole symptom things..oh yeah one last thing there are so blue veins around my legs and breast and my breast are sore as ever, can't even lay on my side of my pillow cause they hurt, try to lay on my back but my lower back hurts, cant sleep at night, tired during the day times, been sleeping during the daytime after work.. cant even drive for a longtime without my shoulder and neck hurting, my emotions are going crazy off the wall.