My cycle is always about 29 days now on cd33 with neg frer

my cycle is always 28-30 days, i just started using opk, it was light up until cd21 but had ewcm cd13 and 14. My period was due april 13 which makes me on cd33. I am wondering if i ovulated late which if i did i would be 13dpo. My temps did start getting high after day cd22 .I took frep and it has been neg. If i ovulated when i was supposed to on cycle day 14 that would mean i am about 4 days late. I have all the symptoms of early preg and temp tonight was 99.26. so if i ovulated late then would that mean my period would be late? if so and i am 13dpo and its neg could i still be pregnant? has anyone got a neg hpt at 13dpo with a frer? I am so confused. I had the Copper IUD removed in Nov and been trying since. Since i started my period at 13 i have been having an ontime reg cycle 28-30 days never late always 4 days long, i am not 34 and this is the first time i have been this late except with my previous pregnancy