TTC 16

Hey

I'm 16, and me and my dude are engaged and are going to be Handfasted on 8 July, 2018. We've been TTC about a month now but thinking about it a lot longer than that. He's 18, and he's had jobs and is working part-time until he finishes school (this coming June). I have some money coming in soon (debts) and may be making money off of my creative writing. The first time we had sex with absolutely no contraception, we were both convinced that I was pregnant cause I was having symptoms times ten. Then I got a blood test (negative), but we were still just crossing our fingers that they got it wrong or they mixed up my blood with somebody else's or something. Then... I got my period.

I keep ferocious track of my cycle and we've been having sex during my fertile window.

Tips?

PS please don't reply with judgy or non-constructive comments. Thanks.