Hi, Just Have A Question As To A Possible Pregnancy.

Hi, just have a question as to a possible pregnancy. I got off of Nexplanon implant a little over 2 months ago and my cycle has been a bit crazy since having it in( about 10 months). Any way this is my first month ttc
And I am about 33 days since the first day of my lmp. I have been having cramps for about a week with no period. Also having headaches and some nausea. Today I checked my cervix to see its position it was high and soft and I had a bit of brownish discharge. Do you think I could be pregnant? I took a test this morning and it was negative.