Bleeding after taking unwanted 72. Test?

Sir/ma'am On 5th September my girlfriend was topless but she was wearing her underwear i masturbated on her, particularly on stomach area but there was no penetration the first thing i did was to clean it up with tissue paper and then she had a bath, Later after 15 minutes i started fingering her after washing my hands , so later i got scared if there was any sperm while having the bath or fingering that went inside her vagina, so within 3 hrs i gave her unwanted 72. She had her periods starting from 23 August to 27 ,her cycle is of 27 days. And on net i found out that 5 September was her ovulating date. After 2 days of on 7 Sept she was bleeding a little bit only while unirating only for 1 day because i think i broke or harmed her hymen. After a week later of taking unwanted 72 on 12 Sept (Today) she was feeling as if she is going have her periods. Is it normal to bleed like periods before due date after taking unwanted 72? Is there any chances of pregnancy? How soon can we get test?