So DH and I have been TTC since October. My last AF started on Jan 11. For the last 2 weeks, I have been dizzy, exhausted, my nose has been running like a faucet, and my boobs are super sensitive. I've taken a test and gotten a BFN, but I'm not sure if this is too soon to test, or if it is possible that my hcg levels are too low to detect. We don't have kids yet, and I've only been on this site for a week...Help!