Hello, Am 18 y female I had done 12 times sex in 6 months july to dec. During 1st time sex in july I took i-pill in july during my periods 1st day. I had my regular periods every month .then after I had sex intercourse with condom every time when I participate in sex. 2 months back in oct 27th is my 1st day of period lasted upto 4 days then nov 9 I had sex with condom I think it is ovulation time so am scared a lot then my periods was delayed upto 7 days I got them on 27th nov actually my cycle is 24 or 26or 28 but I got them on 30 days cycle in nov I had done hcg test in nov before period 1 time and after periods 1 time result always shown negative .on 23rd dec I had sex without protection I took i-pill within 4 hours doctor said it is you r safe days to have sex so don't worry don't take any protection but also I took i-pill no still I didn't get my periods how 2 days onwards am frequently urinating why is there is any chance of pregnancy.