Please read and give me input

So im looking for answers until i go to doctor. So i started my period on 8/24-8\28. Normal cycle... But then i started spotting after i had sex on the 1st i spotted on and off until i had a light flow on the 6th. Bleed enough to change my tampon probably twice a day (i changed it more then that but i was dry) then went back to spotting until about the 10th. Ive been taking test for about 2 weeks all negative. My smells have been intense and i have been having spurs of cramps but no more bleeding. Can any one help this would be my first baby