Need help!!

Ok so me and my partner have been ttc for 3 months now, I've been a bit worried as I lost a baby over a year ago and we haven't really been ready until now and always got the feeling I can't have children. I tested a few weeks back but it was a negative, I've been getting really sore nipples which i noticed were a bit darker, noticed my breasts are growing too, getting a few cramps nothing too bad and really bad acne, im 3 days late for af and tested this morning with a really faint positive but didn't notice it was positive until after time limit then just had a really light bleed, any suggestions on what's going on???