Femara with a leftover follicle?

[SuzzeQ18]

I am new to the forums so I'll add a quick background info!
me(28) DH(35), RE says I have PCO but not PCOS all my hormones are normal and I ovulate on my own (except it takes forever), DHs sperm is perfect.
Clomid #1 - #3= BFN (plus super thin lining)
HSG Scan - Normal
Femara #1 - 2.5mg CD 3-7 BFP 07/2014 chemical pregnancy @ 4 weeks
Femara #2 - 5mg CD 3-7 BFP 08/2014 missed miscarriage D&C @ 8 weeks
Femara #3 - 5mg CD4-8 BFP 01/2015 chemical pregnancy @ 6 weeks
Follistim/IUI #1 - Follistim 75 for 7 days, 3-4 follicles, trigger BFN

So today was my CD 3 scan and it turns out I have a leftover follicle from the last cycle it's about 20x19mm, my RE says he doesn't want to do follistim with IUI in fear of whatever but he says it was ok to try naturally and because my cycles are stupid long (35-45 days) he wants me to take the 5mg of Femara on CD 5-9. He also didn't take my bloodwork (since I live in Korea they do things just a little differently). Now I KNOW I can get pregnant but the issue is staying pregnant and I'm worried that if I do get pregnant again something will go wrong because 1) I'm starting the Femara CD 5-9 and 2) because of the leftover follicle. What can/will happen if I take Femara with a leftover follicle? Should I listen to my RE and just stick to CD 5-9 or should I just say f*&k it and take it CD 3-7?
Ugh help?

 

[SuzzeQ18]

Anyone?

 

[happynewmom1]

I didn't want to read and run but I don't know anything that could help. I just wanted to say I hope things get worked out and you get your bfp soon! It looks like you have had quite a journey.