DID I MESS UP?

I did a trigger shot at the end of last month. My fertility specialist told us to BD for 3 straight days. We already BD the day before the trigger so we did a total of 4 straight days and we started using Preseed on the day I did the trigger. My husband was insisting we BD for 1 week straight but I felt exhausted and I can also sense that he was also tired and that he just wanna make sure we do not miss our chance. At 13 days past trigger, I did a test and it was negative. 2 days later, I have mild cramps. I am wondering if I messed up again and should have agreed with husband to BD for 1 week😔 We have been trying for 1 yr and 8 months already so we really want this to be successful bu now, Idk. It has been 15 days past trigger and I am left with nothing but a bfn 2 days ago😭 U think, there might have been a chance I ovulate later than 3 days after the trigger shot?