PCOS and Fertility questions( TMI and Kinda long)

I am 7 months post op now, so I am in no way trying to conceive yet. My Hubby and I practice safe sex. Now I do have some questions though:

I was taken off of my Glucophage because I am no longer considered insulin resistant. I have been getting a normal (28-30 day) cycle now since August. Still I wondered if I was actually ovulating so I bought the Answer ovulation test strips in a 20 quanity to see if I would ovulate. I had my period on March 13th and started testing the day after my period was done. I tested clear through March 26th and lord and behold two very dark lines came up and from reading the box it states that I should ovulate within 24-48 hours. I was so happy to know I am actually ovulating after all. I don't know if I have ovulated in over 10 years now since I was first diagnosed with PCOS. Well anyways, everything was great until I started spotting brownish blood only three days after I was ovulating on March 30th. My period isn't due until April 11th. It started out only when I wiped, very faint and not a normal flow. I noticed what appeared as uterine tissue in the toliet. I have been spotting since then so now for close to 9 days. Still no real flowing period. I called my OBGYN's office and the Nurse told me to take a pregnancy test. I told her that I wasn't due for my period until April 11th and that we were not trying to conceive, we are being very careful. I did what she told me to however, and it came up NOT Pregnant on the test. 

My question is this: Is it normal to have  bleeding after you ovulate? She feels I have anovualtion, but then why did my test strip come up positive for ovualtion? I have never had tissue and browinish blood when wiping before and I have had a normal period cycle now for 8 months. Is it normal for your body to go through this after loosing so much weight and does this mean my body is trying to get back to a normal pattern to ovulate? This past month is the only month I have tested myself for ovulation and it's the only month were I have spotted and had these symptoms before my actual period date was due. Did anyone here have this happen to them? Thanks for any advice or information on what you feel could be happening. 

I can tell you what I know, after years of  infertility treatments just because you have a positive ovulation test doesn't mean you ovulate.  I was under the impression that you would and it wasn't until after I had my progesterone tested 7 days past ovulation that I found out that I wasn't.     Ovulation tests are testing the level of LH hormone in your urine you may have the spike in LH but still not ovulate.
The reason I was getting the positive test is that I was having the positive boost in LH but my progesterone was not high enough to ovulate.

I do not believe that it is normal for you to bleed after ovulation  unless you have implantation bleeding.  Imlantation bleeding usually can happen 5-10  days after ovulation and it is the fertilized egg burrowing into the uterus.  It usually only lasts a day and it doesn't happen for every woman. 

I think you're body is going through lots of changes after loosing that much weight.  Your hormones are probably going crazy and are trying to regulate themselves. 

Hope this helps!

 quite possible that u r pregnant- keep testing to make sure- I should negative for about two weeks before i got a positive test and I had brown spotting from implantation after 3 miscarriages was wicked scared so i was always going to get checked out
it could just be hormone fluctuations causing some release of the built up uterine lining
if still concerned, make an appt. with the OBGYN

good luck