Spotting and cramping

I have experienced spotting on and off again for the past week. I found out I am pregnant this past Thursday, from a fresh transfer I had Wednesday 6/5/2019. The spotting was brown mixed with pink the first time and It was just a few drops and I didn't see any more until the next day. The next night I had red spotting, a little more in consistency, but again, it was just a one time thing. I find out I am pregnant 2 days later with a confirmed Beta test (this past Thursday) And I didn't have anymore spotting until today (Saturday). I did feel sort of full in my uterus yesterday and slightly crampy. But today I woke up and didn't feel that fullness anymore. Is this normal? This is my first pregnancy so I just don't know what to expect.