How early is to early?

So is taking a test 6 dpo to early? I had a Laproscopy and D&C on the 12th due to an ectopic pregnancy and we wanted to keep trying as soon as I was feeling better and I'm pretty sure I was ovulating this past Sunday-Mondayish..I've been having odd bowel movements, last night before bed and even this morning I feel a little nausea..I haven't had an appetite the last few days...so I tested this morning and thought I saw a very, very, very faint line but I'm not sure. I found out that I was pregnant 4 weeks ago when I was admitted to the hospital for severe cramping and stomach pain as well as major bleeding and found out the 4th that I was pregnant then found out on the 12th that I had an ectopic pregnancy and that my left tube had to be removed. We also read that after a MC or Ectopic that you are pretty fertile after so we tried to hit the mark and I'm really hoping we did but if not we keep trying! Baby dust is appreciated <3