Chart of weeks pregnant n months

flor • been with hubby 12 yrs married for almost 2 yrs we have 3 girls and 1 boy that I just had 5 months ago and already pregnant again busy life:-)♡♥♡♥
Any one have the chart that tells you how many months you are depending the weeks n trimesters??? I saw it weeks back n didn't save it..thanks in advance