Thin endometrium

Hi girls!

I’ve been TTC for my first baby for 4 months now. I’m 31 and my overall exams were good, same as my husband. I have regular periods (30-33) and ovulate every month.

During my last cycle I had some spotting after ovulation and was given progesterone. Today (I ovulated yesterday) I found out my endometrium was thinner than what it needs to be. My doctor said a pregnancy is still possible but chances are lower. However, she mentioned I can take estrogen pills next month and that should help making my endometrium thicker. She said the pills have an instant effect.

Has someone experienced this? Did it help?