F 24 blood gasses 11.5 low cough breathless hurts to breathe fast pulse dizzy 2 neg d dimers well score 1.5 convinced I have clot doc won't do more tests?

Trust your doc. Hi, without more clinical info (timing and progression of sx's, med history) it's hard to say but unless you have major med problems, at 24 you are at very low risk for DVT (clot in leg)/PE (when clot travels to lungs). Well's score shows that and with neg Ddimer test chances of having had clot are so low that more invasive tests pose a greater risk to you. Consider other dx's.