White discharge?

So I took a pregnancy test earlier this month and it came out negative. I had to go to the doctor Monday for a concussion and fever. I haven't had my period since July but last month I did take plan b( morning after pill). The following week had sex again and didn't use anything. I'm having white, smelly, I'd say maybe kind of like cottage cheese. Monday they had me take a urine test to see if I have any infections but I'm pretty sure they'd find out if I'm pregnant and call if they find out. Would this be a sign of pregnancy? I only had sex on August 11,12 and 18th.