19 dpo. No period. Bfn. Stage 4 endo..

I think im 19 dpo. I could of ovulated later. Last Wednesday i got what i thought was a positive. But negative test followed. Still no period. My cyst were hurting me a couple days ago with gas pain but now the pain is mostly gone. No spotting, brown discharge or anything which is my norm. My cycles are 30 to 33 . Im on day 39. Ive had some random long ones but theyre usually connected to a stressor. Can i be pregnant ? Could i of ovulated a whole 2 weeks later? I tried one time and got my daughter. Im starting to worry the infertility of endo is gonna kick in. :(