Difficulties TTC Baby #2

My hubby and I have a 20 month old son and we got preggo with him the very first time we tried. However baby #2 has been a different story 😔 We’ve been TTC since April and I’ve had 2 chemical pregnancies (August & October) and still no luck. My periods and ovulation are regular and when I visited my OBGYN after my 2nd chemical he said everything seemed to be normal. Is anyone else experiencing this?? OR has anyone else been through this and eventually went on to have a healthy pregnancy?? I’m starting to feel like it’s never going to happen. I’m 36 and I’d love to have 2 more kiddos 💕