Getting back in the saddle

I had a miscarriage last month after my fourth IUI (first pregnancy). I went back to the fertility clinic yesterday and will try again with IUI tomorrow. I feel so sad still about the mc and going to the clinic really highlighted that for me. I left in tears and feel so angry. Has anyone else experienced mixed feelings like this? I wish I felt more excited about trying again, but it seems that I'm still riding this wave of grief.