I’m confused?😕- can you get a double LH surge?

So I thought I had my LH surge on Monday and since Monday the opk line has got fainter ( sorry I put Tuesday & Wednesdays tests in the bin). Today I woke up with cramping again so I decided to test again and

the line has got much stronger again - is there such a thing as a double LH surge or does anyone else know what this means? Thank you :)