Progesterone cream?

Has anyone used progesterone cream after ovulation to help maintain progesterone levels? I have a feeling my progesterone levels drop too early making implantation unsuccessful. I confirm ovulation with OPK and temping every month and believe I have had two chemical pregnancies. I Went to my dr and she wouldn't do anything besides an ultra sound until 1 year . ... TTC for 7 months now... So heartbreaking every month and was I thinking of using progesterone cream this month but am nervous because I read a lot of pros/cons.  Any thoughts or comments on personal experiences  would really be appreciated !