I'm approximately 6 weeks pregnant and I noticed late this morning when wiping that I had an odorless pinkish/orange colored discharge that did not leave any trace on my panties. It scared me and I went and got a pregnancy test during lunch. It says I'm pregnant. I try to exercise at least three times a week. Normally, it's speed walking. I incorporate lifting my small weights for my arms. I read that exercise could be some cause to this, but have read that it could be old blood too. Does anyone know what this could mean?