im 4 months late on my period(periods have been regular before hand), ive taken 2 home pregnancy tests,both came back with a faint second line, i went to the doctors for another urine test and it came back negative they sent me in for a blood test and im now waiting for the results of that, my mom went through similar problems when pregnant with me. even her blood tests were negative til about 6 months. is it possible to be pregnant still ? or is there something wrong with me ? im kinda freaking out because if im not pregnant what could it be, the doctor stated i could have low hcg levels. has anyone else had similar problems ?