pregnant or period?

so I had my period about a week and a half ago and then it stopped, i wasnt bleeding for about 5-6 days, my bf and i had sex every night, i started to bleed the night before but im thinking I'm pregnant. i have all the signs except the sence of smell, sore boobs. ive taken test and they say negative. i have an appointment set up with my doctor on the 7th of February for a blood work, its itching at me to know why I'm bleeding, i thought it could be implantation bleeding. can I get some advice?