TTC for the first time.

We have two beautiful babies already(3 year old girl, 2 year old boy). We are both wanting another baby(our last) and officially started TTC. I didn't have to try with my first two. Daughter was 8 months after coming off of BC and we weren't trying to have one(SURPRISE!). I was on BC after I had my daughter when I found out I was pregnant with my son. Talk about surprised?! Anywho, I never had to really *worry* about trying to get pregnant and I never could sympathize with women who had trouble getting pregnant. Now my heart is so broken when AF shows up. She showed up tonight after 3 days past my period should have started. I sat and cried after my husband kept saying how sorry he was. It's not his fault. I guess I'm ranting. I don't wanna seem selfish and I don't wanna seem like I'm bragging about my first two. I guess I just never thought I'd struggle with getting pregnant. 🤷🏼‍♀️😭