Can I still get pregnant after taking EC pills?

Hey guys, I had intercourse on the 24th of last month, which was 4 days after I finished my period and one day before ovulation. We used the condom but it broke and he ended up ejacuated all the way in, an hour later I took the EC pill. One week after taking EC pill, I was bleeding and it was a heavy bleeding which looks like period but the texture is weird, it’s just plain watery blood and bright red in color, lasts 4 days. Don’t know if it was period or side effect of the pill because I just finished period 2 weeks before.

If not to count this weird bleeding as the first day of my cycle, my actual period was supposed to come on the 13th of this month but until now, I did not get it. I took the hpt last Saturday it came out negative. My nipples are sore since last week and I have heartburns the whole time. Are there chances that I might be pregnant? Or is it that I should wait until the next period( starting from the first day of bleeding after taking the pill) to come?