Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Should I buy a home or rent in my situation?
First, you are not a loser nor an idiot! You have avoided many debt mistakes and have a stable income. This move will be good for you and your family and an opportunity to continue to build your life together. The fact you are even thinking about this and asking questions shows that you are responsible. To your rent/buy question, Ben Miller has a great summary in his answer. I have nothing more to add except that you already know you cannot buy. That question is not really your main problem. You need some financial goals and then you need a plan to achieve those goals. As you become more educated about finances, it can be like drinking from a fire hose. Trying to analyze too much information can paralyze you and make you 'freak out' that you are messing everything up! Try this.  Think about where you want to be in 5 years or so. Write down with your fiance some of those dreams and goals. Maybe things like finish college degree(s), buy a house, pay off student loans, wedding, have more kids, etc... As you prioritize these things, you will see that some are short-term goals and some are long-term. Then you lay out a step by step plan to get there. By focusing on each step at a time, you see more success and are more motivated.  As you see movement towards your goals, you will be willing to sacrifice more to get there. You will be willing to rent a cheaper place with less room to make more headway on these things. This will be a several year plan, which is why it is so important to define your goals at the beginning. This will give you motivation and the mental toughness to follow through when it is difficult.