3 months off Pill and frustrated..

My cycle since getting off the pill been irregular and super lite/short lasting 3 days . It's more spotting then a normally AF Ive been having tiredness, moody , peeing a lot and EXTREMELY sore boobs . I've never had it this bad . Which made me test... Of course negative : ( and AF is here on cycle day 48 . I'm just wondering if maybe my lite/non existent AF is maybe my uterine line is thin and haven't thicken back up making it hard for me to conceive .? Should I not start TTC right away? I would appreciate anyone experience/advice getting off the pill and TTC . Thanks