On IUI, clomid caused thin lining

Nini • 39, TTC #2
I'm on IUI. First time. Today I had my ultrasound and dr said the lining is 6.4MM. Thinner than my regular cycle. It looks like Clomid caused the thin lining. Dr did not give me any medicine, just said if  I don't get pregnant this time she will use another med replacing Clomid. Anyone had similar experience? I'm so worried and frustrated at the same time. 
Nicole 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors