where's my rainbow baby??😩😩

I miscarried the beginning of March. My body passed it naturally and my levels were back to 0 after about 1.5 weeks. I've seen so many posts and stories of women being able to conceive right after a miscarriage or very soon after. This is my 4th cycle trying and I'm losing hope! 
I'm 4dpo today. My husband is in the Marine Corps so he will be leaving for about a month or two tomorrow. 
I'm praying this is our month!! Or we will be having to wait a while to try again.Â