Okay girls I need help!

I'm on a journey of TTC for baby #2!!

I was told that if I wanted another baby I needed to lose weight since I was "over weight" well I got on the ball and started eating healthy and working out. Mind you I was irregular☹️ the first 2 months of my weight loss journey i lost 15 lbs. and in those 2 months I had 31 day cycle! I was over the moon!! 3rd month comes and no P yet. I'm already late 3 weeks! But weird thing is this. On the day I was supposed to get my P. I had this clear kinda sticky discharge. That being the day 9/08/17 to 9/14/17. A week later I toke a test and it was negative. Is there a chance that I might be??? Help me please!!