My Periods Were On 25 July And I Have Intercourse

My periods were on 25 July and I have intercourse with my boyfriend and take I pill within 24 hours get periods on 9 august and after it there is no periods on 9 September then start neothisterone on 15 and stop on 21 of September got regular periods on 26 September for three days nd now I can see my tummy being a slight have my I still be pargnent even I have done 6 until pargnent test in 7 weeks all are negative and also ultrasound reports are normal