first time ever TTC any advice?

Sarah
Within the next two days, I'll be trying to get pregnant for the first time ever. I had my mirena removed 5 days ago and I'm taking OTC prenatals. I'm still kinda confused on when the best time is to TTC. I'm also taking progesterone because I have a family history of PCOS. I'm also taking metformin for prediabetes and I'm working out about 3-5 times a week and I've been eating clean for two months now. 
I'm looking for any and all respectful advice because I feel like I have no idea what I'm doing and we just moved to a different state and I don't have many mom friends to ask. 27 and looking for motherly advice