Iui while on levothyroxine

Just a doubt , if I do iui in oct while I'm on levothyroxine(been taking it since Aug) and my tsh levels have not gone down to 2 (its at about 4 now) yet , can I still get pregnant on iui or won't ?

Will the iui be a success or it will fail since tsh hasn't gone down to 2 yet ? I'll be doing another blood test to check my tsh levels before I start iui. But I was just wondering...