Any advice? Been trying to conceive for 8 months

Star
I've been TTC with my boyfriend for 8 long months and whenever AF comes I'm so disaappointed. Only been using glow for one cycle.
​I have been pregnant before however I was only thirteen and went through with a termination as I was unstable and thought it would be unfair to bring a baby in the world when I am on high watch by social services. 
​I can't get pregnant now and we never use any protection at all. Is it me or him? 
​I feel like karma is getting me back for not keeping the baby when I was thirteen.
​Any advice guys? Does it get easier? Will I get pregnant again? 
​AF is due tomorrow and hoping I am pregnant. I'm open minded if not a only used glow for one cycle so far but I feel like giving up.
​What shall I do?