Confusion

I have been ttc#1 since my missed miscarriage in July 2015 I have AF last week but I use a different app as well to see when ovulation is due however it said I was ovulating 2 days before AF. Here's where am confused I have had a normal AF but feel dead weird and my boobs have started feeling different and heavier then normal with my last pregnancy I didn't get a positive result till I was 4 weeks pregnant should I wait to see or go to the doctors?