I’m crazy


Ok I had a period Feb 27th I ovulated on March 15 & had sex on March 6, 14,17,20,23 however on the 19 th i had brownish pinkish spotting in the am when I wiped ...then I bleed during sex 20th & 23rd (only during sex though & nothing after or before ) then my period was 2 days late .. and once it started it wasn’t heavy as usual and ended 2 days early ..my pregnancy test was negative ...I’ve been very nauseous & light headed very sleepy and very thirsty also out of breath could I still be pregnant ?