Scared..

I had the Mirena Iud and i got it taken out August 14th, i was supposed to come on my period september 19th.. so i never came on and i had unprotected sex september 24th.. then october first i bled for like 2 weeks... but now im having all the pregnancy symptoms. And my mom bled when she was pregnant...

So IS THERE A CHANCE i could be pregnant? Im literally experiencing all the symptoms..

Ive taken 3 test a couple weeks ago and they came back negative.. but idk why i would be having all these symptoms...