I had sex with my husband 4th of August and when I went to pee in the morning I found just a speck of blood in my discharge... now I am having terrible waist pain... can I be pregnant...

You have to wait another 3 weeks and take a test... its too early to know. And NOBODY can tell by symptoms as you can put 100 women in a room with kids.. and every one might have had different symptoms before they knew for sure.