Trigger shot & femara & period

So in December I got pregnant off our first iui. Miscarried at 8 weeks. Got my first cycle feb 26. Upped my dose to 10mg femara got a positive opk on day 11 and triggered that afternoon and iui 18 hrs later with sex that day and the next. They said with trigger shot I should get my period by 2 weeks 1 day which is today. I’ve been cramping since my second week of tww. Negative hpt at 13 days past trigger. So assuming my period would be here. My hcg levels before starting treatment again were 4 so I’m not sure if I’m late this time because of that or if femara makes you late?