trying to conceive...

Darian • I am 23 years old, I have a 15 month old son, and I am married!! ❤️
So my husband and I have been trying to have another baby. And I'm starting to get depressed about it... I have been having pregnancy symptoms like crazy. Everyday around the same time I get nauseous, bloated, super gassy. I also have had lots of discharge lately. Well I took a PT and it came out negative. I'm just so confused. Idk maybe I'm to early. Or I really am not pregnant. We have a 15 month old son. And we want to grow our family.  
Every time I take a test it make me feel terrible... :/ any suggestions?