Am I having a miscarriage?

I should be about 6 weeks. I took two hpt and went to the dr to test but havent confirmed. I have all the signs I am pregnant like urinating frequently and sore for weeks now. I even have acne that i never had in my life. I was told exercise is good for pregnancy so I continued to work out. Last week after my workout I noticed some red blood on my panty but when I wiped nothing. Today I felt a strange pain in my after working out and when I got home I saw more blood. When I wiped it kept showing a light pink to brown spots. In the shower a black slimy **** came out not much but still some brown blood coming out (not really gushing or anything). I do have some very light cramps but have been experiencing that for a few weeks anyway. I did feel a twinge of pain during crunches but ignored it. I guess crunches should be out of my routine but they were small and light ones and im really confused what i should or shouldnt be doing. Please help not sure if I lost my baby over my stupidity or is this normal? I will def stop crunches and see Dr tomorrow.