Confused ttc

I'm 19 and my boyfriend is 25, we've been ttc for about 6 months now. I went through a miscarriage at 6 weeks in February, most traumatic experience of my life. Ever since the miscarriage my period has been 31 days in length and last about 5-6 days. I feel like I know exactly when I'm fertile but still nothing. Its really discouraging seeing your period come month after month. My period is supposely coming August 29th but for the last 2 weeks I've been having sore breast, fatigue, and a little feeling sick but nothing extreme. Since this morning I've been having these like little cramps in my left side. ( I always fear because my miscarriage) I just seen my mom and she asked why my face was swollen? She asked if I was pregnant but.. I've never heard of a swollen face if being pregnant early on?