Miscarriage and when to TTC

I went to the doctor on Tuesday for my 10 week checkup and there wasn’t a heartbeat. I used meds and started the process and miscarried Thursday and I’m still bleeding. I want to try right away after bleeding but my bf will be gone this week cause he is going out of town to interview for a new job and than if he gets it which he probably will he will come home Friday and I don’t know when he would be leaving to officially start and he will be gone for 2 weeks at a time and than home for two weeks. I’m just worried he won’t be home for me to get pregnant. I want to try next weekend just Incase they send him right away. I’m hoping he gets like two weeks or so before he goes. I want to try why I’m really fertile. What should I do... I’m just so heartbroken over this. How long after you miscarried did you have sex and get pregnant?