TTC after miscarriage and no period?


I’ve only had two periods this year in April and in July. I was pregnant around 10 weeks and miscarried in early October. Since then I haven’t had a period and not exactly expecting one anyway. I’m considered underweight which I think contributes to my lack of periods and also the length of time it took me to first get pregnant.(A few years!)

So quite soon after my miscarriage ended, I felt comfortable enough to TTC again. We’ve been BDing every day but still no period. What’s the likelihood of getting pregnant first time after a miscarriage with no period? Has it happened to any of you before?