Could i be pregnant?

ok i had my period 23 days ago it was a heavy period well yesterday i had spotting but only when i wiped it was pink. Could this be implantation bleeding? im sure praying i am i dont have a regular period so i dont even know if i ovulate i have PCOS thanks for your input 

It's possible. Good luck to you. Hope you get your BFP 

You could be or not.  If you want to be preggo, I hope you are!  If you are planning to get pregnant, you may want to monitor your period and see if you are actually ovulating.  I think you said you had over 150 lbs to lose still.  You may want to tighten up on your diet and get some exercise to lose some more weight and  have a better chance of conceiving (it may be 40lbs that may make allow you a regular cycle).  Also you need to be careful with psychiatric medications.  Make sure you are using psychotropic drugs that are safe for conception and the development of your baby.

All Best!

UPDATE:

im not pregnant the doctor has started me on metformin to try to regulate my periods since i have pcos its the first step he said it should also help me lose a little more weight im at 210 pounds lost 140 to go