Help me understand please

I am so confused at to why my LH was so high yesterday and then suddenly dipped very low then bumped back up and hasn’t really moved much and that’s testing all day. I’m hoping ovulation is happening as this is the longest surge (testing positive I’ve ever had) is it also possible you can drop more than one egg because I’m in a lot more pain than usual and the CM is a lot! The older you are, the more likely multiples can an occur?!is this true?! Please help me understand.