Get it out girl! It's okay to be homesick and it's surely okay to vent it. Everyone goes through phases like that. You are close to being finished with college and that in itself is an achievement. When you feel those feelings of melancholy coming over you, do something that makes you feel good. Do you have a hobby? Call friends or family, try out new make up, polish your toes, watch a movie, go to Starbucks with a friend, take a walk, scrapbook, listen to music. You'll feel great again soon.
And best of all, you have your BABY with you. Your little one is the best kind of company a girl could ask for.
Hang in there...you have lots of friends here at YT that care about you!