Does anyone know what this could be?

Megan

I think I've posted about this before but I started having cramps again. This has been going on for about 4 to 5 weeks. They are mostly on the lower left side of my stomach and sometimes in the lower middle part. Water normally helps and I've tried drinking as much as I can but it's not doing anything for me. I've been taking some vitamins as well. I just got off my period a couple days ago so I know for sure that isnt it. Has anyone experienced this and is it worth going to the doctor for? Also I had a very weird period. It started out with pink discharge that got lighter and then I saw some blood and that lasted for 5 days. I've had a little bit of spotting today but not much.