much lighter in color and in flow

My husband and I have been TTC for about 5 months now. I never really tracked my period before or figured up ovulation time before. I figured out that I have a 33 day cycle and from July to October it was spot on. In November my period was 4 days late, and odd. Although my husband and I did have unprotected sex during my period (nothing new) I bled for a day and then stopped completely for a day and a half. When I started bleeding again it was much lighter in color and in flow but only lasted about half a day. Then it stopped completely again. This is weird b/c even if we do have sex during my period it's always stayed strong and true and only tampers at the end, after 5 or 6 days of bleeding. About 2 days after I stopped for good, I felt a slight cramping, it didn't hurt but was just annoying and I though I was going to start bleeding again but I never did. The next morning when I was in the bathroom there was a pinkish line of blood, but nothing else after that. Not even the slightest bit on the paper.

Since then I have been abnormally moody, sleeping more, and even a touch of constipation. (I have a healthy diet and know that's not the cause) It's still a little too early to test and I don't have insurance to go to a doctor. My breasts are more tender, but not extremely painful and my husband says they look bigger.

I would just like some advice on any past experiences. Please, don't tell me that the only way to know is by taking a test, because I know that already, it's just still too early right now and I don't wanna hear a bunch of people telling me what I already know. Thank you