I've had 3 early losses all around 5 weeks. With the first one I didn't conceive again in that relationship so we wont go there (it had taken me 3 years to conceive that one). With my current relationship the first pregnancy took 9 months to achieve, the loss occurred then AF arrived at around the usual time. It took around 4 months to conceive again, the loss occurred, AF arrived at around the usual time again. I got lucky again 3 cycles later and this one has stuck. Best of luck.