Faint positive tests? Opinions?

This would be my first pregnancy. I'm very new to this, my husband and I just decided to adopt the attitude of "not really trying yet, but if it happens, it happens" since we've discussed it for years and finally feel somewhat ready. Haha. So I'm now 4 days late for my period and I took a test last Friday that was definitely negative. No sign of lines whatsoever. I haven't been feeling well the past few mornings plus my emotions have been all over the place so I decided to take another test yesterday since I just felt off and got the first results? It's a very thin faint line. I then took the second test last night and it also came up a very faint line. I then took the last one when I got up this morning and it also looks like a very faint line.

Do you think these are positive? I'm going to keep testing everyday to see if the lines get darker, I'm just new to this so I wanted to get opinions from someone else. I really would like a clear positive test before getting an appointment with my doctor. I'm kind of also shocked since I thought it would take at least a few months before it happened!

Thanks!!