Where is my **bleeping** stork!?

So I missed my period for August.

I'm currently 10 days late. Around 3 weeks ago (Aug. 10) I had VERY light pink spotting , like only when I wiped, but not every bathroom trip. I experienced fatigue, almost constant headaches, increased urination, & moodiness most of the past 5 days. I have taken 3 home pregnancy tests which have been negative and a negative blood test yesterday. My boyfriend and I have had intercourse daily for the past 5 days & 2 days ago I had a very very light pink spot on the paper after I wiped after intercourse. Yesterday I had the same very light pinkish , sometimes brownish spotting also only when I wiped on some bathroom trips. Today I started having mild lower abdominal cramps off & on, but not no where near the severity of my period cramping & no back pain like I have on my normal periods, and the same very light pink spotting when I wiped. I'm really confused. We've been trying to conceive for over a year and have had a miscarriage around 6 months ago.

Has anyone experienced anything similar??