Advice please!?

L🎀 • N

So I’m 14 dpo no sign of period as of yet.. I feel heavy down in my stomach, slight cramps and twinges on left side.. I don’t normally get before period symptoms if I’m honest.. I’ve taken a cheap test strip this morning and it was negative.. it’s normally 14 dpo you can come on isn’t it? Do I buy the expensive first response 6 days early test or do I just wait for period to show.. how late can you be and are my symptoms just period related?

I’m CD 38