Period while pregnant?!

I thought I was pregnant in January but my period came but it was very light I didn’t think anything of it but my period hasn’t gone back to normal it’s almost non existent it’s so light at this point and my hips are hurting really bad at night and the other day I felt a movement (I’ve been pregnant before ) it scared me but I just brushes it off as gas but now I’ve felt it multiple times is it possible I could be 20 weeks and not know until now ?! Should I test or just make an appointment I don’t know what to do or if I’m being crazy