Needing encouragement

I have only been trying for about 4 months but I am already starting to feel defeat. I always thought my period was normal and regular but lately it seems out of whack. Last month it didn't come until day 39- (imagine my excitement) and this month it came on day 28 and only lasted for 2 days, which is also abnormal for me (I usually have to for 5-7 days). I have my yearly appointment with my gyno on the 17th so I will wait until then to ask my questions. I just thought you ladies on here could give me some encouragement :)