I'm 19,For the second month in a row my period is now 15 days late and when I had it last month it was very very light and now my mucas is gel like and I have taken 5 HPT and still not pregnant, my boobs are getting bigger and when I eat I feel like a bottomless pit,what is going on I have never been this late and I don't take and form of birth control but me and my boyfriend are trying to have a baby... Also I have been to thee doctor and the say there is nothing wrong and I am not pregnant.. . SO any info would be FANTASTIC...

It could be that you are ovulating. Some woman can tell exactly when they are ovulating because they actually secrete a "gooooey" discharge. Kind of like when you get a new credit card in the mail- the goooey stuff that holds your card on the paper. Now, just a note--- The more clear the secretion, the more fertile you are...