Could I be pregnant?

Hey. Ok just need some advice. My husband and I just started trying for our first child and I had what I thought was my period but it started a few days early and it didn’t look like it usually does and by that I mean the blood color was very light brown and then turned to a dark brown mixed with a little red. I also did not have the cramps I usually have either but it did last 3 days. Now, I am having headaches, nausea, low back pain, frequent urination( I am getting up at night which is NOT normal), acne (which I usually do not have even on my period) and an achy feeling in my pelvis. I did take a test 4 days before my period was due and it was negative. Any advice would be appreciated. I am planning on taking another test tomorrow morning but just wanted to know what everyone thought.

Thanks!!!!

Update** took a test this morning and it was negative. So, I am not sure what is going on 🤷‍♀️.