I feel at a dead end..

I’m not to sure if this is the right group if it’s not please redirect me.. (I have posted this on other groups I just really am trying to find some answers)

I had a baby girl in January but got my periods back pretty quick.. all fine and always on time.. however then they just stopped.. I haven’t had a period for 4 months.. I had some spotting on the 2-3rd of august but nothing more since.. and tests have been negative…

Me and my husband want to start trying for baby number 2 is it still possible to get pregnant without a period? I know no one is a doctor on here but I just thought ild try get an opinion from others that might be able to help me figure this out.. I really feel rubbish

Thank you in advance