Miscarried in the past/ ovulation

Hey guys. My fiance and have been together on and off for 17 years and miscarried quite a few times. But to get over it i looked at it like well at least i know i can get preggo. This month thanx to glow we can track ovulation days now and we really worked on it..he has had kids you the times we broke up but thats not a problem at all..i mean theres nothing wrong with him down there either. I just dont wanna get my hopes up. If we dont get preggo this month are there any natural fertility sources i can use. .i need u guys please feel free to comment