help me prego?

hi my name is oliva and i have had my period for like 5-6 months now i’ve never had a late period or anything until a few days ago you see i’m a virgin and i don’t have a boyfriend or anything so there is no ways i can be pregnant but it’s like 6 days late and i began to get nervous i’m a junior and when i ask my mom to take me to the gynecologist she’s going to instantly think i’m pregnant and bash me i know i haven’t been doing extreme exercise or having any weight gain or weight loss but my breast are tender and seem to be growing a bit i’m super terrified and don’t know what to do any ideas on what this is

(sorry this has no punctuation just wanted to finish it and see if someone could help me get answers)