Missed period, very light spotting

[chachasam]

Not sure if I'm in the right place but hopefully someone can give me some advice.

So my last period was January 11th (I THINK, I don't know for sure because I forgot to mark it down)
January 24-25 was the last time I had sex (unprotected). A week later I had strong cramping for a few hours one day (important?)
This month (if I calculated right) I was expecting to have my period around the 8th, but had nothing but lots of watery discharge.
I figured it was just a bit late so I waited a week and still nothing, so on February 19th I took a first response test in the morning which was negative.

On the 20th I left for vacation and brought along tampons just in case.
Yesterday just before going out I realized some brown discharge in my underwear and when I wiped so I put in a tampon.
5 hours later I took it out and there was a very little bit of pink on the end but mostly brown. So I put on a panty liner so I could monitor it, I had watery discharge.

A couple hours later, went to the bathroom and when I wiped and there was quite a bit of pink so I figured my period must be starting now... Put a tampon in, 6 hours later, nothing on the tampon...

Nothing today, no cramps, nothing but clear discharge.

Any ideas what this is? Should I test again or is it even a possibility of pregnancy at this point?

(I'm not sure when I ovulated as I am not even sure about my period... So I don't even know if I tested early)

 

[Dollybird]

I'd test again.. Maybe implantation. That said if it is u might not get a bfp for a few days xxx

 

[MichCuc]

If the last time you had sex was over a month ago, then the possibility of implantation now is impossible. You only took 1 pregnancy test? Its possible you're pregnant, and the test was a false negative. You could test again to rule that out. If its still negative, it sounds like your body is being screwy. Are you usually regular? It could just be a weird cycle. Good luck!