Missed periods. Can i still be pregnant.

I've got my last natural periods on 11 April and had sex on 19  April and I skip periods in May but got few blood clots in mid of May. I took two preg test which was negative then I consulted my gynaec on26May she also tested which was neg and gave me regestrone10mg tablets for 5days. I  took regestrone from 30May and again had sex on 1st june which was protected unprotected both ( he didn't cum inside me used pull out methd) just few strokes without protection. I went to gynaec on3 june and she again took test which was (-). She told me I'll get my bleeding frm regestrone till 8June and if i didn't bleed by 8only thn to test.I got the withdrawal bleeding on 7June. In July Ididn't get period. On3& 4july jst exp cramp & saw tiny blood particles aft urine while cleaning wth water.On8 jul I took test& thn on16and then on 20,22 July all negatives. she told me to take regestrone again. can I still be pregnant. I cant go for beta hcg/USG (I've exp irregcycle last year &itbecame reg this yr.