Birth control (the shot)?

im 17 years old and own been on the pill more or less 3 times before, and fixed to go on the shot purely so in bag i forgot to take it i wouldnt be risking anything. i own been have extremely bad crams for a few weeks and i spotted 2 days ago but later that was it, bled a spot after stopped, then i bled for a while again today and thought i started my period but havent bled since that today. i know spotting is majority, but i have never spotted formerly in my time with birth control. and im pretty sure you dont acquire your period for 3 months because thats how long the shot last.

i need some answers... pleasee
Answers:

Whats right for terrible menstral cramps?

Give it some time, you body a moment ago needs to smooth out. Your period will probably stop altogether, you may enjoy some spotting now and again, or a terrifically light extent, but that is pretty exceptional.

Fertility?

I have be on the shot for a year or a little longer. I love it! I have extremely bad cramps immediately i only receive my period once every 3 months or so! The pill be to much work for me and it didnt even help beside my cramps at all! and if you mess up your screwed right? anyway be in motion for the shot! good luck to ya!