Patience, my son! Some of the keys have already been said, compromise, trade-offs, etc. The real key is to build a trusting, secure relationship that needs time to grow. Both must feel equal partnership in the marriage. Perhaps she feels tied down to the child and (incoming), especially since she is the one to have to carry them for nine months, while you can get away from that. Make sure that you are carrying your load at home. Not just the heavy "man" stuff like building, hunting and gathering, but the "softer" stuff like dishes and laundry. (NOTE: I only use these descriptors to reflect "traditional" viewpoints. I do not personally feel that any task is gender specific. Please do not call me, Oprah or Dr. Phil, or flame me in any way. Thank you.) When each partner feels equal and interchangable, then each partner will feel more comfortable letting the other pursue individual needs.
Or, you can be a total obnoxious ass like me and your spouse will be more than happy to send you away for many days at a time
Both of you came in as individual persons with interests that may not totally mesh with the other. But this is part of the "whole" that each of you fell in love with. Would you buy a table that you liked, and then break a leg off when you brought it home? If either of you tries to suppress the other's pursuit of self actualization, then you take away part of the person that you love. In the end, it leads to resentment and likely destruction of the relationship. Talk to each other about your feelings and what each of you need to be whole.
28 years and two adult children have taught me something, but not enough to draw a path for someone. Every relationship is a bushwhack. The suggestions provided by me and the others on this board are the map, compass and GPS. It's up to you to find your way.
Best of luck.