I am 22 years old. 5' 4" and about 115-120llbs. I have reason to believe that i am pregnant. I have been very emotional the last two weeks, my breasts are very sore and feel really heavy, my sense of smell has gotten stronger lately and i have been nautious for about 4 days now. I am currenly on birth control, which allows me to get my period every 3 months. I last had it last month so im not due for awhile. I took a pregancy test 3 days ago at night and it came out negative, however the line was very faint. What do you suggest I do?