Positive OPK at 8-10dpo

[Tiffaq]

I'm currently CD28 and I received my first positive OPK on CD15 and has severe cramping the next day. Now for the past 4 days I've had positive OPK tests again and they're getting darker each day. Took an internet cheapie HPT and it was a BFN.

Has this happened to you guys before? I'm so confused.

 

[Symphony7]

I actually see lines on both HPTs.

 

[OnErth&InHvn]

Yeah I see lines....

 

[Bevziibubble]

I can see lines