Could I be pregnant ?

I done the sugar pregnancy test, all urine was dried up. I am wondering if I could possibly be pregnant as my boobs are quite sore, my nipples are really dark, I’m bloated quite a bit, I urinate more frequently and I keep getting light headed. I had sexual intercourse on my last day of my period and 2 days after that I had this brown discharge I never paid any attention to it. I had sex 6 days later which was 2 days before ovulation and we had no protection again

. Could I be pregnant ?? Please don’t say get a pregnancy test as it’s coming up undetermined and I can’t go to my doctor as my mum always comes as I’m only 17 so I can’t go about being pregnant,