Wth is happening

Start of 7 dpo I had period like cramps for two days. Starting at 5 dpo my boobs started hurting. Yesterday I was EXHASUTED even after two cups of coffee. Plus I almost threw up multiple times. & cried multiple times. Lol My boobs are so firm and they are extremely veiny. Even on the nipples. Middle of the night they felt so heavy , today they don’t hurt as bad. Maybe it’s bc I haven’t worn a bra today? I don’t know. They look the same. Period is in 2 days. I want to take a test so bad but don’t want to waste money. WhAt do y’all think it is???