TTC struggle

I'm not sure if this is the right group but my husband & I had a baby in 2016. I never went back on birth control and I started tracking my cycle May of 2017 (6 months after having baby #1). We probably aren't trying as hard as a lot of women out there so I feel bad complaining, but we've had sex during ovulation consistently the past 7ish months but we have not used protection of any kind since before baby#1.

I have been so ready to expand our family but I'm starting to wonder if there is something wrong & I'm really scared to go to a doctor & for them to say that I can't have anymore kids or something. I can't talk to my husband about this because he just gets depressed & I'm tired of making him feel bad.

But recently I have been struggling more because I have 3 sisters that are currently pregnant. I'm happy for them but I can't help but be jealous. It's gotten to the point that I basically cry by myself at night. I'm sorry for the long rant. I don't even know if I have a question but I just needed to vent to someone that won't judge me