Maybe Baby

Ok so I haven't gotten my period since April 26th and its stressing me out. I've spotted here and there but nothing requiring a pad and it didn't last throughout the whole day. I've taken multiple types of pregnancy tests but they have all said negative. I've had a molar pregnancy in the past and the home tests didn't pick up my hormones then either. I'm hoping to be pregnant because I have syptoms but it could just be me wanting to be pregnant, I have a dr appt. on wens day but I'm just so anxious. Has anyone gone through anything similar ? Or why else I wouldn't have my cycle for so long?