Welcome to HCM,
After going through your history,that your virgin and did not had intercourse,it is very very unlikely to have pregnancy
But theoretically if semen enters vagina it is possible to become pregnant, in your case expected MC date is 8 th April hence ovulation must have occurred possibly 14 days back that is 25 or 26 march those are most likely days to get pregnant so when this incident occurred you can think of your chances.
If you get your period normally it will relive your anxiety
but if you miss your period which is less likely ,take a urine pregnancy test if it is negative wait for week and repeat the test then you may get period or consult Gynaecologist in case it is positive for further guidance.
In future please practice safe sex
Hope this will help you