Sorry, this is a long question because I need to give some history.

PMH: Asthma
PSH: None
MEds: NOne

I naturally miscarried at 6.5 wk gestational age on april 3, 2006. This was my first pregnancy. I stopped bleeding on April 13th. BHCG on the 15th was 458.

I bleed brown blood from the 24th to the 28th and BHCG was 45.

BHCG 21 on May 5th, 11 on May 12th, and BHCG of 7 on May 19th.

I had my first normal menses on May 15th through the 21st.

My ovulation kit was read low from May 22nd until May 29th.

I had sex on the 24th, unprotected.

My ovulation kit read high from May 30th until presently June 6th. For elevated progesterone but, still no LH appeared for ovulation on an egg.

My problem is that I began to bleed brown vaginal blood (spotting) from May 30th until presently June 6th. I have had negative urine tests for pregnancy and my BHCG is 3 on June 5th. I spotted the first few days then bleed 1 regular tampon, then began to spotting again.

Question: Did I just miscarry a chemical pregnancy or am I pregnant now and implanting. I am confused because my last BHCG was 7 two weeks ago and now is BHCG of 3. My urine pregnancy test in negative. My ovulation kit is reading high progesterone. And, I am bleeding brown blood. I am worried because I am RH negative and had to take Rhogam with the last pregnancy. I have pregnancy symptoms, increased urination, nausea and vomiting, bloating etc. Please help!