Took my blood HCG test today at  about 4w5d and waiting on results. Also got my iron tested as I've been pale and super tired. My RBC is up which is a good sign, as is my MCV. I started bleeding 2 days ago after my period was 3 days late. Looked as though it started as implantation bleeding then started getting heavier, but there's only the odd clot and it's super bright, not dark. About half the volume of blood that occurs during my periods. Maybe breakthrough bleeding? It's already slowing down a lot. Nausea has eased for the most part, boobs are still a little sore and the backs achin' a bit. Everything is on and off though, bloating, belching, constipation/diarrhea (no happy medium!) Nervous to see what the test says. Two piss sticks were negative- one this afternoon and one 3 days ago in the afternoon also so could be bad timing, or that I'm just not pregnant!