Anyone similar situation?

Okay so I ovulated late i think this month. usually i have a period between 31-40 days. last month i had a chemical prg. and found out on cd 38 then got my period cd 43. i am currently using opks this month. I used them for a while and thought i got a positive on cd18 so i stopped for a week or so and we BD that week. Then for some reason i thought i would try another ov. test just to see if it was dark from me being pregnant cause it was two weeks after i thought i ov. it was actually a lot darker than i expected. I umed this one was a actual post. test and the one i got on cd18 was negative. so now i am 9dpo have done a million tests and all are neg so far. the ov tests are neg too. did i ovulate that late? Is that possible? i also have had light cramping really low on both sides for about two weeks now although it is starting to wear off. I had some bbs tinglyness and lots of acne. anyone have ideas on what is giong on with me? lol anyone have a similar situation that could help?>