Time for a blood test?!

Brandi • My name is Brandi and my fiancé`s name is Joe. I`m 23 he`s 25. TTC baby #1. I`m a hair stylist and he`s in flooring.
So first AF was about 8 days late.. Then I a had some bleeding that lasted about 4 hours.. Then spotting for a few days. I have been experiencing cramps ranging from severe to very mild.. Then that stopped a few days ago. Now my breasts are very sensitive and my nipples seem a tad darker than normals. I have been nauseous at the thought of food and I have to force myself to eat, abnormally tired, and I have been going to the bathroom multiple times an hour. I took a HPT two days ago and there was a vvvvfl so I took another today and I don't see the line anymore. Time to go to the doctor or just wait it out? Please please give me some advice! Thank you!!