Any similar experiences ?!?

So I have A 2 year old and when he turned 1 we started trying for another. It took from September to June to conceive and unfortunately we lost that baby at 12 weeks. We are trying again for a few months and I’m so frustrated with a few things: 1. I have really weird short periods since my MC. Really really light only bleeding for a day or two. Does this affect us not getting pregnant?

2. I’m wondering if my information isn’t right in the app. How do I know how many days long my cycle is? I’m thinking I have that wrong.

3. At what point do I seek help ? Like see a specialist or get on clomid or something like that?

I’m so annoyed. We got pregnant with our 1st when I was still taking BC and now we have been at this for over a year and are having no luck. We just want a successful pregnancy and I’m loosing hope since our MC. Every month when AF comes its so disappointing.

Thanks in advance for the help!