Is 3 days post IUI too early for implantation bleeding?

Megan
On Friday I got a positive OPK. My hubby and I BD that night and then Saturday when I went to my specialist, I had two eggs measuring 21mm and 25mm so they did our first round of <a href="https://glowing.com/glow-fertility-program">IUI</a>, gave me the trigger shot, and we did our second round on Sunday.  Today I just wiped and have the tiniest amount of pink on the tp, and have been very crampy the past two days. Is it possible to have implantation bleeding already? 👶🏼🙏🏼