You are in the middle of your sixth month :)
If you go to this site and scroll down a bit there's a pregnancy chart I saved it to my phone cause I get a little confused sometimes too! It's super simple :)
http://community.babycenter.com/post/a31641453/weeks_months_trimesters_chart
If you Google pregnancy weeks to months and look in the pictures it shows charts that are the weeks to months it really helps
5.5 months... 6 months isnt until about 26 weeks. This is because each month consists of on average About 4.5 weeks... NOT 4. The only month with exactly 4 weeks is feb. This is why 40 weeks is 9 months and not 10. Look at pregnancy sites they will tell you the same.
I jus turned 24weeks today! I'm 6months! Yayyyyy
What should I Google up on?
google can help you, but I think you should be hitting six months now(: