Spotting 5dpo-10dpo

🍼Lindsey🍼 • Hubby and I are ttc baby #1 and we are 22 and 23. God will bless us on his time!
I need some advice ladies. I have been spotting since 5dpo. I'm 10dpo today and it's still going. Sometimes pink and red but mostly brown. I took a test today and got a bfn... Idk if I have something going wrong with me or what?...This Is my second month ttc and nothing happens I'm starting to wonder if I can even have kids. I feel like my body is rejecting my husband's sperm...:(